Kohnke, Helmut Soil science simplified / Helmut Kohnke, D. P. Franzmeier. - 4th ed. - New Delhi : Scientific, c2013. - x, 162 p. : ill. ; 22 cm. Includes index. ISBN: 9789381714256 (Pbk.) Subjects--Topical Terms: Soil science. LC Class. No.: S591 / .K63 2013