Wortman, Sterling, 1923- To feed this world : the challenge and the strategy / Sterling Wortman, Ralph W. Cummings, Jr. - Baltimore : Johns Hopkins University Press, c1978. - xiv, 440 p. : ill. ; 24 cm. Includes bibliographies and index. ISBN: 0801821363. 0801821371. LCCN: 78008478 Subjects--Topical Terms: Food supply.Food supply--Developing countries.Agriculture--Developing countries. LC Class. No.: HD 9000.6 / W932f 1978 Dewey Class. No.: 338.1/9