Campbell McLachlan, born 15 April 1960, in Christchurch, New Zealand.LLB (Hons) (Well), 1983; Diploma cum laude, Hague Academy of International Law 1985; Commonwealth Scholar; PhD (London) 1988. Barrister of the High Court of New Zealand (call 1984); Queen’s (now King’s) Counsel (call 2007). Professor of International Dispute Resolution, University of Cambridge; Fellow of Trinity Hall Cambridge (2024). Previously: Professor of Law, Victoria University of Wellington (2003-2024); Arthur Goodhart Visiting Professor of Legal Science, University of Cambridge (2022-2023); Visiting Fellow, All Souls’ College Oxford (2011); Senior Research Fellow, Kolleg-Forschungsgruppe “International rule of law: Rise or decline?”, Berlin (2019-2020); Partner, Herbert Smith (1992-2003). Institut de Droit International: Associé, 2015, Membre 2021, Rapporteur, 18th Commission “Equality of Parties before International Investment Tribunals” (2017-2021). Australian & New Zealand Society of International Law, President (2006-2009). International Law Association: Rapporteur, Committee on International Civil and Commercial Litigation (1992-2002); Co-Chair, Study Group on the Practice and Procedure of International Courts and Tribunals (2002-2010); Secretary, British Branch (1997-2002), New Zealand Branch (2003-2008). American Law Institute: Member (2005-); International Advisor, Restatement Fourth Foreign Relations Law (2013-2018, 2023-).Permanent Court of Arbitration, Member (2021-).International Centre for Settlement of Investment Disputes, Member, Panel of Arbitrators (2007-).Andrew Dickinson, born 1971 in Southport, United Kingdom. Educated at Dane Court Grammar School, Broadstairs. Studied Law at St Edmund Hall, University of Oxford, BA Jurisprudence (1993); Bachelor of Civil Law (1994) (Vinerian Scholar). Completed Legal Practice Course at the College of Law, Chester (1995). Qualified as a Solicitor, England and Wales (1997). Granted Higher Rights of Audience (2002). Clifford Chance LLP (Solicitor, 1997-2003; Consultant Solicitor, 2003-2019). British Institute of International and Comparative Law (Visiting Fellow, 2003-2021; Honorary Senior Fellow, from 2021). University of Sydney (Visiting Professor 2010; Professor in Private International Law, 2011-2013). Max Planck Institute Luxembourg (External Scientific Fellow, 2013-2014). University of Oxford (Professor of Law, 2013-2023; Professor of the Conflict of Laws, from 2023). St Catherine’s College, University of Oxford (Tutorial Fellow in Law, from 2013; Senior Tutor, from 2025). Notre Dame Law School (Global Distinguished Visiting Professor, 2024). New York University School of Law (Scholar in Residence,2024). One of the Specialist Editors of Dicey, Morris & Collins – The Conflict of Laws, Lord Collins of Mapesbury and Jonathan Harris KC (gen. eds.), 15th and 16th eds. Member, UK Ministry of Justice Steering Committee on Private International Law (North, then Mance Committee), from 2006. Joint Series Editor, OUP Private International Law Series, from 2017. Founding Member of the editorial board of the Journal of Private International Law. Associate Member, International Academy of Comparative Law.

• Campbell McLachlan, On the Interface Between Public and Private International Law, General Course on International LawPrefacePart One. On conceptions of law outside the StateChapter I. The public/private divide in international lawA. On conceptions of law outside the State1. The state we are in2. Peak law? 3. The function of law in the international community4. Different functions of law in a global communityB. On the public/private divide in international law1. Sovereignty and property2. Two legal persons3. Mixed identities: The East India companies4. Choices of legal forms: Public or private? C. Lost in translation: Neglected issues at the interfaceChapter II. On public international lawA. The public functions of public international law1. Public international law as primarily a law of inter-State relations2. Public purposesB. The influence of private law on public international law1. Sources2. Choice of law3. Jurisdiction4. International judicial cooperationC. Public international law recognition of a role for private international law1. The right to self-determination2. Private law claims and statusD. Limitations of the public international law modelChapter III. On private international lawA. The private function of private international law1. Allocative function: A system of secondary rules2. Pluralism3. Genealogy4. Private international law as a law of interpersonal relations5. Private purposesB. The influence of public international law on private international law1. Prescriptive jurisdiction2. The functions of comity3. Public international law as the applicable lawC. Limitations and opportunities of the private international law model1. Opportunities2. LimitationsChapter IV. International arbitration: a semi-autonomous systemA. IntroductionB. A private realm beyond the State1. Creation of the essential pillars of the contemporary system2. Constituent elements3. Character4. Reliance on the techniques of private international lawC. Connections with national law: A matter of perspectiveD. Relation with public international lawE. Is arbitration a transnational legal system? 1. Substantive law: A lex mercatoria? 2. ProcedureChapter V. Transnational law beyond the State? A. IntroductionB. Origins of an ideaC. What is transnational law? 1. A response to globalisation2. Private elements of transnational regulation3. The turn to legal pluralism4. Transnational law codified5. Transnational law as processD. Implications for contemporary practicePart Two. On the public/private interfaceChapter VI. Public international law: pluralism or systemic integration? A. IntroductionB. Public international law, plural or general? C. Public international law as a law of conflicts1. Regime theory and regime conflict in international relations2. Limitations of the conflictual paradigm3. The pluralist critiqueD. The search for system in international law1. Completeness2. Legal stability3. Unity4. Coherence in legal reasoningE. The principle of systemic integration in treaty interpretation1. Insights from practice2. Introduction into the general rule of interpretation in the VCLT3. Embrace in judicial practice4. Interpretation5. The public purposes of systemic integrationChapter VII. State responsibility for the exercise of public powerA. IntroductionB. Foundations of State responsibility1. Essential elements2. The concept of the State3. General approach4. Contribution to systemic integration of public international lawC. Relation with private law and private parties1. Sources2. Part one: Claims3. Part two: Remedies4. Private law and public international law claims distinguished5. ConclusionChapter VIII. Foreign relations law: public power – private remediesA. IntroductionB. Foreign relations law at the interface1. A term of art? 2. Points of distinctionC. Five conceptions of foreign relations law1. Exclusionary2. Domestic reception of international law3. Constitutional law4. Diplomatic5. Allocative: Application of the techniques of private international lawD. Two contrasting applications1. Private claim against State officials for external exercise of public power2. Foreign State claim: Public or private? E. ConclusionsChapter IX. Jurisdiction I: External exercise of public powerA. IntroductionB. The use and abuse of jurisdiction and extraterritoriality1. Jurisdiction2. ExtraterritorialityC. Proscription or prescription? 1. The function of connecting factors2. Allocation and overlapping jurisdiction3. Prescriptive, judicial and enforcement jurisdictionD. Territoriality and extraterritoriality: Exercise of power and its constraint1. The fallacy of reference to the doctrine of jurisdiction2. A divided and tailored approach3. Can international armed conflict be extra-jurisdictional? E. Jurisdiction and the responsibility of the State and its officials1. State responsibility2. Personal accountability of public officialsChapter X. Jurisdiction II: The control of private partiesA. IntroductionB. The public/private divide1. Public international law and the exercise of public power2. Private international law and the resolution of transnational private disputes3. ReassessmentC. Jurisdiction over corporations1. Public international choice of law rules for corporations2. Private international law rules on the recognition of corporations and branches3. Private international law jurisdiction over parent companiesD. Regulatory control: Extraterritorial jurisdiction over effects1. The “effects doctrine” and extraterritoriality: A unilateral assertion2. The response of other States3. Development of a sufficiency of connection test4. American retrenchmentE. Comity and the jurisdictional interests of other StatesPart Three. Private claims against the StateChapter XI. Immunities I: Public powerA. IntroductionB. The public functions of State immunity1. Jurisdictional immunities and the sovereign independence of States2. Allocative function of limits on claims against foreign State3. Connecting factorsC. Customary immunity and its material sources1. National judicial decisions2. National legislation3. State practice in the formulation of treatiesD. Scope1. Types of immunity2. Types of jurisdictionE. Immunity of individuals as State officials from international crimes1. In a private civil claim2. Individual responsibility for international crimes before national courts3. Pinochet: Implied waiver of immunity under the suppression conventions4. The response of the ICJ5. Controversy in the International Law CommissionChapter XII. Immunities II: Private claims and the corporate StateA. IntroductionB. Immunity as allocation of jurisdiction over foreign StatesC. The concept of commerciality and its function in immunity cases1. Application of private international law to the foreign State2. Test of commercialityD. The State-owned corporation: Private or public? 1. The State-owned corporation in the law of immunities2. Separate legal personality and governmental activities3. State responsibility and the public bodyChapter XIII. Investment arbitration I: Public law in private processA. IntroductionB. The hybrid public/private character of investment arbitration1. What is investment arbitration for? The alternative options2. The genesis of the ICSID Convention3. Key private features of its designC. Public law elements1. Internal2. ExternalD. Process fix: From arbitration to a standing court/appellate mechanism? Chapter XIV. Investment arbitration II: Applicable law – public and privateA. IntroductionB. A mixed system of applicable law1. Reasons for choice of law2. A continuing role for host State lawC. Choice of law in investment arbitration1. The Tribunal’s powers2. Myths and misconceptions about Article 42 ICSID Convention3. The choice of law processD. Role of host State lawE. Role of international law1. Investment treaties and the principle of systemic integration2. ApplicationsChapter XV. The once and future science of international lawA. Introduction: Law amid constant change1. The return of the State2. Evanescent nature of States and corporations3. Waning of State engagement4. Academic criticismB. International law as a science1. Key elements2. Balance between stability and change3. Fundamental enduring elementsC. Characteristics of the contemporary international system1. Multilateralism as a system-constitutive process2. Plural by design: Internal self-determination and private international lawD. Coherence1. Why systemic integration matters now2. General principles of international lawE. Conclusion1. Politics and law: A false opposition2. The international communitySelected bibliography  Andrew Dickinson, Natural Justice in Recognition and Enforcement of Foreign JudgmentsChapter I. Foreign judgments in the conflict of lawsA. IntroductionB. OutlineChapter II. A natural law toolboxA. Natural law and natural justiceB. Setting the sceneC. Natural libertyD. Equality and self-love in the natural orderE. Of (private) war and peaceF. Duties of humanity (mutual assistance) G. Administering natural justiceH. The significance of the natural legal orderI. Political societies and the law of nature1. The formation of political societies2. The elasticity of consent as a guiding principle3. Attachment to a political society4. Territoriality and the scope of “sovereign” authorityJ. Transforming natural law to the natural law of nations1. Introduction2. From the law of nature to the natural law of nationsK. Summary and conclusionsChapter III. Natural law and the recognition and enforcement of judgmentsA. Fundamental questionsB. Grotius (reprise) C. Going Dutch – Paulus and Johannes Voet, and Ulrik Huber1. Introduction2. Paulus Voet3. Johannes Voet4. Ulrik Huber5. The scope of adjudicatory jurisdiction: Huber’s first two axioms6. Comity as a bridge between legal ordersD. Reception and development in the eighteenth century1. Reception into the common law2. European evolutionE. The nineteenth century: Revolution and evolution1. Introduction2. Natural law reasoning in early nineteenth century English case law3. The incoming positivist tide4. Wächter and Westlake5. The legal positivist conundrum6. Story and SavignyF. The contours of State practice1. Reciprocity (I) – Austria2. Reciprocity (II) – Germany3. Substantive review (I) – France4. Substantive review (II) – Kingdom of the Netherlands5. Evidentiary function – Sweden6. The common law method – Great Britain and the United States7. Reciprocity free reception – Italy8. Emerging patternsG. Formal co-operation: In search of perfectionH. Global governance and human rightsI. Summary and conclusionsChapter IV. Natural law’s legacy: “Natural justice” as a ground of impeachmentA. Justice and injusticeB. Tools, techniques and terminology for addressing injustice in foreign judgments1. Classifying the grounds of opposition2. Breach of agreement and fraud: Perspective matters3. “Natural justice”: The common law’s natural law artefact4. “Natural justice”: By any other name? C. Levelling upD. Adjudicatory jurisdiction: A question of natural justice? Chapter V. Renaturalisation? A. Introduction1. Mutual aid2. Peaceful resolution of disputes by means other than adjudication 3. Citizens of the worldB. Exposition1. The pursuit of natural justice2. Multidimensional justice3. Adjudicatory jurisdiction: Seeking a “common judge” 4. Equal justice5. A common enterpriseC. Summing upAnnex (Chapter IV.). Grounds for opposing recognition and enforcement of judgmentsBibliography

Campbell McLachlan, born 15 April 1960, in Christchurch, New Zealand.LLB (Hons) (Well), 1983; Diploma cum laude, Hague Academy of International Law 1985; Commonwealth Scholar; PhD (London) 1988. Barrister of the High Court of New Zealand (call 1984); Queen’s (now King’s) Counsel (call 2007). Professor of International Dispute Resolution, University of Cambridge; Fellow of Trinity Hall Cambridge (2024). Previously: Professor of Law, Victoria University of Wellington (2003-2024); Arthur Goodhart Visiting Professor of Legal Science, University of Cambridge (2022-2023); Visiting Fellow, All Souls’ College Oxford (2011); Senior Research Fellow, Kolleg-Forschungsgruppe “International rule of law: Rise or decline?”, Berlin (2019-2020); Partner, Herbert Smith (1992-2003). Institut de Droit International: Associé, 2015, Membre 2021, Rapporteur, 18th Commission “Equality of Parties before International Investment Tribunals” (2017-2021). Australian & New Zealand Society of International Law, President (2006-2009). International Law Association: Rapporteur, Committee on International Civil and Commercial Litigation (1992-2002); Co-Chair, Study Group on the Practice and Procedure of International Courts and Tribunals (2002-2010); Secretary, British Branch (1997-2002), New Zealand Branch (2003-2008). American Law Institute: Member (2005-); International Advisor, Restatement Fourth Foreign Relations Law (2013-2018, 2023-).Permanent Court of Arbitration, Member (2021-).International Centre for Settlement of Investment Disputes, Member, Panel of Arbitrators (2007-).Andrew Dickinson, born 1971 in Southport, United Kingdom. Educated at Dane Court Grammar School, Broadstairs. Studied Law at St Edmund Hall, University of Oxford, BA Jurisprudence (1993); Bachelor of Civil Law (1994) (Vinerian Scholar). Completed Legal Practice Course at the College of Law, Chester (1995). Qualified as a Solicitor, England and Wales (1997). Granted Higher Rights of Audience (2002). Clifford Chance LLP (Solicitor, 1997-2003; Consultant Solicitor, 2003-2019). British Institute of International and Comparative Law (Visiting Fellow, 2003-2021; Honorary Senior Fellow, from 2021). University of Sydney (Visiting Professor 2010; Professor in Private International Law, 2011-2013). Max Planck Institute Luxembourg (External Scientific Fellow, 2013-2014). University of Oxford (Professor of Law, 2013-2023; Professor of the Conflict of Laws, from 2023). St Catherine’s College, University of Oxford (Tutorial Fellow in Law, from 2013; Senior Tutor, from 2025). Notre Dame Law School (Global Distinguished Visiting Professor, 2024). New York University School of Law (Scholar in Residence,2024). One of the Specialist Editors of Dicey, Morris & Collins – The Conflict of Laws, Lord Collins of Mapesbury and Jonathan Harris KC (gen. eds.), 15th and 16th eds. Member, UK Ministry of Justice Steering Committee on Private International Law (North, then Mance Committee), from 2006. Joint Series Editor, OUP Private International Law Series, from 2017. Founding Member of the editorial board of the Journal of Private International Law. Associate Member, International Academy of Comparative Law.

• Campbell McLachlan, On the Interface Between Public and Private International Law, General Course on International LawPrefacePart One. On conceptions of law outside the StateChapter I. The public/private divide in international lawA. On conceptions of law outside the State1. The state we are in2. Peak law? 3. The function of law in the international community4. Different functions of law in a global communityB. On the public/private divide in international law1. Sovereignty and property2. Two legal persons3. Mixed identities: The East India companies4. Choices of legal forms: Public or private? C. Lost in translation: Neglected issues at the interfaceChapter II. On public international lawA. The public functions of public international law1. Public international law as primarily a law of inter-State relations2. Public purposesB. The influence of private law on public international law1. Sources2. Choice of law3. Jurisdiction4. International judicial cooperationC. Public international law recognition of a role for private international law1. The right to self-determination2. Private law claims and statusD. Limitations of the public international law modelChapter III. On private international lawA. The private function of private international law1. Allocative function: A system of secondary rules2. Pluralism3. Genealogy4. Private international law as a law of interpersonal relations5. Private purposesB. The influence of public international law on private international law1. Prescriptive jurisdiction2. The functions of comity3. Public international law as the applicable lawC. Limitations and opportunities of the private international law model1. Opportunities2. LimitationsChapter IV. International arbitration: a semi-autonomous systemA. IntroductionB. A private realm beyond the State1. Creation of the essential pillars of the contemporary system2. Constituent elements3. Character4. Reliance on the techniques of private international lawC. Connections with national law: A matter of perspectiveD. Relation with public international lawE. Is arbitration a transnational legal system? 1. Substantive law: A lex mercatoria? 2. ProcedureChapter V. Transnational law beyond the State? A. IntroductionB. Origins of an ideaC. What is transnational law? 1. A response to globalisation2. Private elements of transnational regulation3. The turn to legal pluralism4. Transnational law codified5. Transnational law as processD. Implications for contemporary practicePart Two. On the public/private interfaceChapter VI. Public international law: pluralism or systemic integration? A. IntroductionB. Public international law, plural or general? C. Public international law as a law of conflicts1. Regime theory and regime conflict in international relations2. Limitations of the conflictual paradigm3. The pluralist critiqueD. The search for system in international law1. Completeness2. Legal stability3. Unity4. Coherence in legal reasoningE. The principle of systemic integration in treaty interpretation1. Insights from practice2. Introduction into the general rule of interpretation in the VCLT3. Embrace in judicial practice4. Interpretation5. The public purposes of systemic integrationChapter VII. State responsibility for the exercise of public powerA. IntroductionB. Foundations of State responsibility1. Essential elements2. The concept of the State3. General approach4. Contribution to systemic integration of public international lawC. Relation with private law and private parties1. Sources2. Part one: Claims3. Part two: Remedies4. Private law and public international law claims distinguished5. ConclusionChapter VIII. Foreign relations law: public power – private remediesA. IntroductionB. Foreign relations law at the interface1. A term of art? 2. Points of distinctionC. Five conceptions of foreign relations law1. Exclusionary2. Domestic reception of international law3. Constitutional law4. Diplomatic5. Allocative: Application of the techniques of private international lawD. Two contrasting applications1. Private claim against State officials for external exercise of public power2. Foreign State claim: Public or private? E. ConclusionsChapter IX. Jurisdiction I: External exercise of public powerA. IntroductionB. The use and abuse of jurisdiction and extraterritoriality1. Jurisdiction2. ExtraterritorialityC. Proscription or prescription? 1. The function of connecting factors2. Allocation and overlapping jurisdiction3. Prescriptive, judicial and enforcement jurisdictionD. Territoriality and extraterritoriality: Exercise of power and its constraint1. The fallacy of reference to the doctrine of jurisdiction2. A divided and tailored approach3. Can international armed conflict be extra-jurisdictional? E. Jurisdiction and the responsibility of the State and its officials1. State responsibility2. Personal accountability of public officialsChapter X. Jurisdiction II: The control of private partiesA. IntroductionB. The public/private divide1. Public international law and the exercise of public power2. Private international law and the resolution of transnational private disputes3. ReassessmentC. Jurisdiction over corporations1. Public international choice of law rules for corporations2. Private international law rules on the recognition of corporations and branches3. Private international law jurisdiction over parent companiesD. Regulatory control: Extraterritorial jurisdiction over effects1. The “effects doctrine” and extraterritoriality: A unilateral assertion2. The response of other States3. Development of a sufficiency of connection test4. American retrenchmentE. Comity and the jurisdictional interests of other StatesPart Three. Private claims against the StateChapter XI. Immunities I: Public powerA. IntroductionB. The public functions of State immunity1. Jurisdictional immunities and the sovereign independence of States2. Allocative function of limits on claims against foreign State3. Connecting factorsC. Customary immunity and its material sources1. National judicial decisions2. National legislation3. State practice in the formulation of treatiesD. Scope1. Types of immunity2. Types of jurisdictionE. Immunity of individuals as State officials from international crimes1. In a private civil claim2. Individual responsibility for international crimes before national courts3. Pinochet: Implied waiver of immunity under the suppression conventions4. The response of the ICJ5. Controversy in the International Law CommissionChapter XII. Immunities II: Private claims and the corporate StateA. IntroductionB. Immunity as allocation of jurisdiction over foreign StatesC. The concept of commerciality and its function in immunity cases1. Application of private international law to the foreign State2. Test of commercialityD. The State-owned corporation: Private or public? 1. The State-owned corporation in the law of immunities2. Separate legal personality and governmental activities3. State responsibility and the public bodyChapter XIII. Investment arbitration I: Public law in private processA. IntroductionB. The hybrid public/private character of investment arbitration1. What is investment arbitration for? The alternative options2. The genesis of the ICSID Convention3. Key private features of its designC. Public law elements1. Internal2. ExternalD. Process fix: From arbitration to a standing court/appellate mechanism? Chapter XIV. Investment arbitration II: Applicable law – public and privateA. IntroductionB. A mixed system of applicable law1. Reasons for choice of law2. A continuing role for host State lawC. Choice of law in investment arbitration1. The Tribunal’s powers2. Myths and misconceptions about Article 42 ICSID Convention3. The choice of law processD. Role of host State lawE. Role of international law1. Investment treaties and the principle of systemic integration2. ApplicationsChapter XV. The once and future science of international lawA. Introduction: Law amid constant change1. The return of the State2. Evanescent nature of States and corporations3. Waning of State engagement4. Academic criticismB. International law as a science1. Key elements2. Balance between stability and change3. Fundamental enduring elementsC. Characteristics of the contemporary international system1. Multilateralism as a system-constitutive process2. Plural by design: Internal self-determination and private international lawD. Coherence1. Why systemic integration matters now2. General principles of international lawE. Conclusion1. Politics and law: A false opposition2. The international communitySelected bibliography  Andrew Dickinson, Natural Justice in Recognition and Enforcement of Foreign JudgmentsChapter I. Foreign judgments in the conflict of lawsA. IntroductionB. OutlineChapter II. A natural law toolboxA. Natural law and natural justiceB. Setting the sceneC. Natural libertyD. Equality and self-love in the natural orderE. Of (private) war and peaceF. Duties of humanity (mutual assistance) G. Administering natural justiceH. The significance of the natural legal orderI. Political societies and the law of nature1. The formation of political societies2. The elasticity of consent as a guiding principle3. Attachment to a political society4. Territoriality and the scope of “sovereign” authorityJ. Transforming natural law to the natural law of nations1. Introduction2. From the law of nature to the natural law of nationsK. Summary and conclusionsChapter III. Natural law and the recognition and enforcement of judgmentsA. Fundamental questionsB. Grotius (reprise) C. Going Dutch – Paulus and Johannes Voet, and Ulrik Huber1. Introduction2. Paulus Voet3. Johannes Voet4. Ulrik Huber5. The scope of adjudicatory jurisdiction: Huber’s first two axioms6. Comity as a bridge between legal ordersD. Reception and development in the eighteenth century1. Reception into the common law2. European evolutionE. The nineteenth century: Revolution and evolution1. Introduction2. Natural law reasoning in early nineteenth century English case law3. The incoming positivist tide4. Wächter and Westlake5. The legal positivist conundrum6. Story and SavignyF. The contours of State practice1. Reciprocity (I) – Austria2. Reciprocity (II) – Germany3. Substantive review (I) – France4. Substantive review (II) – Kingdom of the Netherlands5. Evidentiary function – Sweden6. The common law method – Great Britain and the United States7. Reciprocity free reception – Italy8. Emerging patternsG. Formal co-operation: In search of perfectionH. Global governance and human rightsI. Summary and conclusionsChapter IV. Natural law’s legacy: “Natural justice” as a ground of impeachmentA. Justice and injusticeB. Tools, techniques and terminology for addressing injustice in foreign judgments1. Classifying the grounds of opposition2. Breach of agreement and fraud: Perspective matters3. “Natural justice”: The common law’s natural law artefact4. “Natural justice”: By any other name? C. Levelling upD. Adjudicatory jurisdiction: A question of natural justice? Chapter V. Renaturalisation? A. Introduction1. Mutual aid2. Peaceful resolution of disputes by means other than adjudication 3. Citizens of the worldB. Exposition1. The pursuit of natural justice2. Multidimensional justice3. Adjudicatory jurisdiction: Seeking a “common judge” 4. Equal justice5. A common enterpriseC. Summing upAnnex (Chapter IV.). Grounds for opposing recognition and enforcement of judgmentsBibliography