Stevenson, F. J. Cycles of soil : carbon, nitrogen, phosphorus, sulfur, micronutrients / F.J. Stevenson and M.A. Cole. - 2nd ed. - New York : Wiley, c1999. - xviii, 427 p. : ill. ; 25 cm. Includes bibliographical references and index. ISBN: 0471320714 (alk. paper) Subjects--Topical Terms: Soil biochemistry.Biogeochemical cycles.Soil ecology. LC Class. No.: S592.7 / S73 1999