Killham, Ken. Soil ecology / Ken Killham ; with electron micrographs by Ralph Foster. - Cambridge : Cambridge University Press, c1994. - xviii, 242 p. : ill. ; 24 cm. Includes bibliographical references (p. 212-221) and index. ISBN: 052143517X (hardback) 0521435218 (paperback) Subjects--Topical Terms: Soil ecology.Soil science.Biogeochemical cycles. LC Class. No.: QH541.5.S6 / K54 1994