Zimmermann, Erich W. 1888-1961. Introduction to World Resources Erich W. Zimmermann Erich W., edited by Hunker Hennry L. - New York. London. Harper and Row, 1964 - viii, 220 pages 21 cm includes Bibliographical references and index. LCCN: LC 64-20276 Subjects--Topical Terms: Natural resources LC Class. No.: HC 103.7 / .Z5 1964