Brady, N. C. (1990). The nature and properties of soils. New York: Macmillan Publishing Company.
Dyfyniad Arddull ChicagoBrady, Nyle C. The Nature and Properties of Soils. New York: Macmillan Publishing Company, 1990.
Dyfyniad MLABrady, Nyle C. The Nature and Properties of Soils. New York: Macmillan Publishing Company, 1990.
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