Duckham, Alec Narraway Farming systems of the world / by A. N. Duckham and G. B. Masefie ld; assisted by R. W. Wiley and Kathleen Down - London : Chatto & Windus, 1970 - xviii, 542 p. : 10 plates, ill., maps ; 24 cm. Includes bibliographical references ISBN: 0701113618 Subjects--Topical Terms: Agriculture --Economic aspects------ Dewey Class. No.: 338.1 DUC