Biological indicators of soil health / edited by C. Pankhurst, B. M. Double and V. V. S. R. Gupta. - Oxon, UK : CABI Publishing, c1997. - xi, 451 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 0851991580 Subjects--Topical Terms: Soil biology. Dewey Class. No.: 631.46 / BIO