Duckham, Alec Narraway Farming systems of the world / by A. N. Duckham and G. B. Masefield ; assisted by R. W. Willey and Kathleen Down - London : Chatto & Windus, 1970 - xviii, 542 p. (1 fold.), 10 plates (1 fold.). : ill., maps. ; 24 cm. ISBN: 0701113618 : PND 120.00 Subjects--Topical Terms: Agricultural systems Dewey Class. No.: 630