Jones, William I. Systemes de culture en Africa : les hautes terres du Zaire, Rwanda et Burundi / William I. Jones and Roberto Egli. - Washington, D.C., U.S.A. : World Bank, 1984. - xi, 107 p. : maps ; 28 cm. - World Bank technical paper, no. 27 0253-7494 ; . Includes bibliographical references. ISBN: 0821303988 LCCN: 84017405 Subjects--Topical Terms: Agricultural systemsTarımsal sistemler LC Class. No.: S472.C46 / J66 1984 Dewey Class. No.: 630 / JON 1984