"The 17 papers show a tremendous range both in subject and depth of coverage. The list of chapter authors is impressive and only serves to illustrate the considerable influence of these two scientists. The variety of authors results in a wide range of styles and quality of writing. The level of mathematical sophistication also varies. There will be something for everyone in this collection. Several of the chapters represent a good starting point for graduatestudents looking for an introduction to a particular topic. --Journal of Environmental Quality"The 17 papers show a tremendous range both in subject and depth of coverage. The list of chapter authors is impressive and only serves to illustrate the considerable influence of these two scientists. The variety of authors results in a wide range of styles and quality of writing. The level of mathematical sophistication also varies. There will be something for everyone in this collection. Several of the chapters represent a good starting point for graduatestudents looking for an introduction to a particular topic."--Journal of Environmental Quality

• Contributors 1: M. Quintard and S. Whitaker: Fundamentals of Transport Equation Formulation for Two-Phase Flow in Homogeneous and Heterogeneous Porous Media 2: W.G. Gray, M.A. Celia, and P.C. Reeves: Incorporation of Interfacial Areas in Models of Two-Phase Flow 3: G. Sposito: The Statistical Physics of Subsurface Solute Transport 4: J.-Y Parlange, T.S. Steenhuis, R. Haverkamp, D.A. Barry, P.J. Culligan, W.L. Hogarth, M.B. Parlange, P. Ross, and F. Stagnitti: Soil Properties and Water Movement 5: M.L. Brusseau: Nonideal Transport of Reactive Solutes in Porous Media: Cutting Across History and Disciplines 6: M. Th. van Genuchten and E.A. Sudicky: Recent Advances in Vadose Zone Flow and Transport Modeling 7: J.E. Watson, R.F. Harris, Y. Liu, and W.R. Gardner: Diffusion-Linked Microbial Metabolism in the Vadose Zone 8: L.M. Abriola, K.D. Pennell, W.J. Weber, Jr., J.R. Lang, and M.D. Wilkins: Persistence and Interphase Mass Transfer of Liquid Organic Contaminants in the Unsaturated Zone: Experimental Observations and Mathematical Modeling 9: Y.H. El-Farhan, K.M. Scow, and D.E. Rolston: Coupling Vapor Transport and Transformation of Volatile Organic Chemicals 10: M.B. Parlange, J.D. Albertson, W.E. Eichinger, A.T. Cahill, T.J. Jackson, G. Kiely, and G.G. Katul: Evaporation: Use of Fast-Response Turbulence Sensors, Raman Lidar, and Passive Microwave Remote Sensing 11: J.W. Hopmans, J.M.H. Hendrickx, and J.S. Selker: Emerging Measurement Techniques for Vadose Zone Characterization 12: T.J. Jackson, E.T. Engman, T.J. Schmugge: Microwave Observations of Soil Hydrology 13: S.W. Tyler, B.R. Scanlon, G.W. Gee, and G.B. Allison: Water and Solute Transport in Arid Vadose Zones: Innovations in Measurement and Analysis 14: A.W. Warrick, L. Pan, and P.J. Wierenga: Water Flow in Desert Soils near Buried Waste Repositories 15: D.J. Mulla, A.P. Mallawatantri, O.Wendroth, M. Joschko, H. Rogasik, and S. Koszinski: Site-Specific Management of Flow and Tranport in Homogeneous and Structured Soils 16: R.J. Wagenet and J. Bouma: Customizing Soil-Water Expertise for Different Users 17: W.A. Jury: Present Directions and Future Research in Vadose Zone Hydrology Index