White, Robert E. Principles and practice of soil science : the soil as a natural resource / Robert E. White. - Fourth edition. - Malden, MA : USA : Blackwell Publishing, 2006. - xi, 363 pages : illustrations ; 27 cm. Includes index. ISBN: 9780632064557 Pbk. Bp. Subjects--Topical Terms: Soil science. LC Class. No.: S 591 W45 2006 CAFSD RC