Norman, D. W. Farming systems development and soil conservation / David Norman and Malcolm Douglas. - Rome : Food and Agriculture Organization of the United Nations, 1994. - viii, 173 p. : ill. ; 21 cm. - FAO farm systems management series ; 7 . Includes bibliographical references (p. 163-173). ISBN: 9251034486 LCCN: 95196815 Subjects--Topical Terms: Agricultural systems.Soil conservation. LC Class. No.: S494.S95 / N675 1994