Bennett, Hugh H. 1881-1960. Elements of soil conservation / Hugh H.Bennett - 2d ed. - New York : McGraw-Hill, c1955 - 358 p. : illus. ; 24 cm. Includes Index Subjects--Topical Terms: Soil conservation--United States.Soil erosion--United States. Dewey Class. No.: 631.45 / BEE 1955