Soils : an introduction / Michael J. Singer, Donald N. Munns. Soils. Singer, Michael J. (Michael John), 1945- Munns, Donald N. (Donald Neville), 1931- Soil science. Soils. Plant-soil relationships. Soil management. S591 .S555 1987 631.4 19 SIS Includes bibliographical references and index. New York : Macmillan, c1987. c1987. 1987 Text xix, 492 p., [8] p. of plates : eng