To feed this world :
Wortman, Sterling.
To feed this world : the challenge and the strategy / [Text] Sterling Wortman, Ralph W. Cummings. - Baltimore, MD John Hopkins U. c1978 - xiv, 440p.
Includes bibliographical references and index.
0801821371
To feed this world : the challenge and the strategy / [Text] Sterling Wortman, Ralph W. Cummings. - Baltimore, MD John Hopkins U. c1978 - xiv, 440p.
Includes bibliographical references and index.
0801821371