John A. MacKay – författare

Economic Risk in Hydrocarbon Exploration provides a total framework for assessing the uncertainties associated with exploration risk from beginning to end. Numerous examples with accompanying microcomputer algorithms illustrate how to quantitatively approach economic risk. The text compares detailed assumptions and models of economic risk, and presents numerical examples throughout to facilitate hands-on calculations using popular spread-sheet packages on personal computers.- Covers economic risk from exploration through production models- Brings methods to a level where all can be done on a PC- Analyzes numerical examples from the real world- Removes "mystery" from how economics is done- Addresses assumptions in models and shows how they influence projections

From Simon & Schuster, Ecumenics is John A. Mackay's exploration of the science of the church universal. While the family is gone, the collection is well kept and the book's content will remain everlasting.This hardcover book is one of a huge collection of interesting Christian books that belonged to one or all of a grandfather, father and son—each of whom were California Presbyterian ministers all the way back in to the 19th century.

In this edition to the A Way of Life series, prominent member of the Presbyterian church John A. Mackay provides insight on the history of Presbyterianism.The A Way of Life book series includes titles written by well-known religious leaders to help readers learn what it is like to live as a member of the churches represented. In this addition to the series, Presbyterian theologian, missionary, and educator John A. Mackay shares his experiences as a prominent and highly active member and leader of the Presbyterian church. The Presbyterian Way of Life offers a complete and insightful look into the history of the religion, including its heritage, way of worship, and organization. “Dr. Mackay knows and loves the Presbyterian Church. If there is anyone who may deservedly be called ‘Mr. Presbyterian’ of this generation, that man is John A. Mackay.” —Kirkus Reviews

Democratic principles have not taken root readily in Latin America in part because spiritual inwardness, a necessary prerequisite of democracy that is inseparable from the Bible, has been lacking. During the twentieth century Protestant workers like John Mackay (1889-1983) brought the evangelical message to that continent through lectures and writings.This collection of John Mackay''s early essays presents a range of his contributions, and the ideas in the essays are grounded in his clear understanding of the nature and dignity of human beings in the light of God. The fruit of this teaching is self-confidence, courage, steadfastness, and other positive ethical attributes that accompany progress and success for individuals and peoples. The essays touch on religious, educational, literary, political, and philosophical themes in the service of Christian truth. They embody key ideas and strategic judgments related to the presentation of the Evangel, the most basic and first work of the church. The message balances spiritual and social aspects of Christianity to meet the needs of the people, and it accompanied progressive social and political changes in the region. The historical experience of Protestantism in Latin America is well worth recalling today by readers in North America and elsewhere.