Singer, Michael J. Soils : an introduction / Michael J. Singer, Donald N. Munns. - 4th ed. - Upper Saddle River, NJ : Prentice Hall, 1999. - xvi, 527 p. : ill. (some col.) ; 26 cm. ISBN: 0136792421 Subjects--Topical Terms: Soil science.Soils.Plant-soil relationships.Soil management. Dewey Class. No.: 631.4 SIN