Further Reading

Brady ND and Weil RR (2002) The Nature and Properties of Soils, 13th edn., 960pp. Upper Saddle River: Prentice Hall.

Buol SW, Southard RJ, Graham RC, and McDaniel PA (2003) Soil Genesis and Classification, 512pp. New York: Blackwell Publishing.

Jenny H (1941) Factors of Soil Formation, 281pp. New York: McGraw-Hill.

Leopold A (1949) A Sand County Almanac, and Sketches Here and There, 226pp. New York: Oxford Press.

Stevenson FJ (1994) Humus Chemistry: Genesis, Composition, Reactions, 2nd edn. New York: Wiley.

Stevenson FJ and Cole MA (1994) Cycles of Soil: Carbon, Nitrogen, Phosphorus, Sulfur, Macronutrients, 2nd edn. New York: Wiley.

Waksman SA (1938) Humus: Origin, Chemical Composition, and Importance in Nature. Baltimore, MD: Williams and Wilkins.

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