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m →‎Vanjske veze i literatura: pretvaranje zastarelih linkova za ISBN u šablone + kozmetika
 
Red 20:
* Soil Survey Staff. ([[1975]]) ''Soil Taxonomy: A basic system of soil classification for making and interpreting soil surveys.'' USDA-SCS Agric. Handb. 436. U.S. Gov. Print. Office. Washington, DC.
* Soil Survey Division Staff. ([[1993]]) ''Soil survey manual''. Soil Conservation Service. U.S. Department of Agriculture Handbook 18.
* Logan, W. B., Dirt: The ecstatic skin of the earth. 1995 {{ISBN |1-57322-004-3}}
* Faulkner, William. Plowman's Folly. New York, Grosset & Dunlap. 1943. {{ISBN |0-933280-51-3}}
* Jenny, Hans, Factors of Soil Formation: A System of Quantitative Pedology 1941
* [http://jan.ucc.nau.edu/~doetqp-p/courses/env320/lec1/Lec1.html Why Study Soils?] {{Webarchive|url=https://web.archive.org/web/20180209052922/http://jan.ucc.nau.edu/~doetqp-p/courses/env320/lec1/Lec1.html |date=2018-02-09 }}