Books Reviewed: "Economics as a Science"; "Economic Analysis and Operations Research: Optimization Techniques in Quantitative Economic Models"; "Techniques for Project Appraisal Under Uncertainty"; "The Fiscal Revolution in America"; "Change in Agriculture: The Northern United States, 1820-1870"; "Soviet Agriculture in Perspective-·A Study of Its Successes and Failures"; "Die Landwirtschaftlichen Betriebsgrossen in der Sowjetunion in Statistik und Theorie (The Optimum Size of Farms in the Soviet Union in Statistics and Theory)"; "Les Marches Paysans en U.R.S.S. (The Peasant Markets in the USSR)"; "The Agricultural Development of Venezuela"; "Tropical Agriculture: The Development of Production"; "Sorghum"