Brady, Nyle C. The Nature and Properties of Soils / by Nyle C. Brady and Raymond C. Well - 12th ed. - Noida: Pearson, 1999. - xiv, 881p. ISBN: 9780138524449 Subjects--Topical Terms: BiotechnologyHydrologic CyclePotassiumSoils Dewey Class. No.: 631.4 / BRA/T