Manassah Jamel T Ed. Proceeding on advances in food producing systems for arid and semiarid lands - New York Academic Press 1981 - xiv, 679-1274p. cm. Standard No.: 53370 Source: Textual Subjects--Topical Terms: Dry farmingAgriculture Dewey Class. No.: J9D,3p1,N80, M1,B