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World Soil Resour. Rep. 84, Food & Agric. Organ. United Nations,
Rome.
Marbut, C.F. 1927. A scheme for soil classification. In Proceedings of
the 1st International Congress on Soil Science and Communication,
vol. 5, 1–31.
Simonson, R.W. 1959. Outline of a generalized theory of soil genesis.
Soil Science Society of America, Proceedings 23: 152–156.
Smith, G.D. 1983. Historical development of soil taxonomybackground. In Pedogenesis and soil taxonomy: 1. Concepts and
interactions, ed. L.P. Wilding, 23–49. Amsterdam: Elsevier.
Soil Classification Working Group. 1998. The Canadian system of soil
classification, 3rd ed. Agriculture and Agri-Food Canada Publ. 1646.
Soil Survey Staff. 1960. Soil classification, a comprehensive system,
7th approximation. Washington, DC: U.S. Govt. Print. Office.
Soil Survey Staff. 1975. Soil taxonomy: A basic system of soil
classification for making and interpreting soil surveys. Agric.
Handbook No. 436. Washington, DC: U.S. Govt. Print. Office.
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil
classification for making and interpreting soil surveys, 2nd ed.
Agric. Handbook 436. USDA, Natural Resources Conserv. Serv.
US Dept.
Soil Survey Staff. 2014. Keys to soil taxonomy, 12th ed. U.S.
Dep. Agric., Nat. Resour. Conserv. Serv.
References
41