Agriculture in semi-arid environments / edited by A. E. Hall, G. H. Cannell, and H. W. Lawton ; contributors, H. P. Bailey ... [et al.]. Semi-arid environments. Hall, A. E. (Anthony Elmit), 1940- Cannell, Glen H., 1919- Lawton, Harry W., 1927-2005. Dry farming. Arid regions agriculture. 630.9154 23 HAA Includes bibliographies and index. Berlin ; New York : Springer-Verlag, 1979. 1979. 1979 Text xvi, 340 p. : eng Ecological studies ; vol. 34.