Books Reviewed: "A Revision of Demand Theory"; "The Meaning and Validity of Economic Theory: A Historical Approach"; "Experimental Designs"; "Science and Economic Development: New Patterns of Living"; "Motivation Research in Advertising and Marketing"; "Year Book of Labour Statistics 1955"; "The Combined Food Board: A Study in Wartime International Planning"; "The Marketing of Livestock and Meat"; "The New Revolution in the Cotton Economy"; "The World Fertilizer Economy"; "A World Geography of Forest Resources"