Books Reviewed: "Linear Programming and Economic Analysis"; "Economic Models: An Exposition"; "Marketing Research"; "Problems in Marketing (Second Edition)"; "Federal Lending and Loan Insurance"; "Capital in Agriculture—Its Formation and Financing Since 1870"; "Farm Crisis: 1919-1923"; "Manual of Nutrition. Fourth Edition"; "Modern Methoden in der Agrarstatistik (Modern Methods in Agricultural Statistics)"; "The Theory of Economic Growth"; "The Great Siberian Migration"; "