The agricultural resources of the world / by W. Van Royen, Ph.D., professor and head, Department of Geography, University of Maryland ; in cooperation with Bureau of Agricultural Economics, U.S. Department of Agriculture. Van Royen, William, 1900- Agricultural resources Maps. G1046.J1 V3 1952 912 VAA At head of title: University of Maryland, Department of Geography, College of Business and Public Administration. Includes bibliographies. 1954 Image 1 atlas (vi, 258 pages) : eng Atlas of the world's resources ; volume I Scales differ.