Sustainable agriculture in temperate zones / edited by Charles A. Francis, Cornelia Butler Flora, Larry D. King. Francis, Charles A., 1940- Flora, Cornelia Butler, 1943- King, Larry D. Sustainable agriculture. 630.912 23 SUS "A Wiley-Interscience publication." Includes bibliographical references and indexes. New York : John Wiley & Sons, c1990. c1990. 1990 Text xiii, 487 p. : eng