Zimmermann, Erich W. World resources and industries : a functional appraisal of the availability of agricultural and industrial resources / by Erich W. Zimmermann. - Rev. ed. - New York : Harper, c1951. - xvi, 832 p. : ill, maps. Includes bibliographies. Subjects--Topical Terms: Natural resources.Economic geography. Dewey Class. No.: 330.9 / ZIW 1951