Brady, Nyle C. The nature and properties of soils / Nyle C. Brady. - 8th ed. - New Delhi : Eurasia, c 1974. - xvi, 639 p. : ill. ; 23 cm. Includes index. 316 316 Subjects--Topical Terms: Soil science. Soils. Dewey Class. No.: 631.4 / B729n