Hilgard, E. W. (1918). Soils: Their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions. New York: The Macmillan Company.
Styl ChicagoHilgard, E. W. Soils: Their Formation, Properties, Composition, and Relations to Climate and Plant Growth in the Humid and Arid Regions. New York: The Macmillan Company, 1918.
Citace podle MLAHilgard, E. W. Soils: Their Formation, Properties, Composition, and Relations to Climate and Plant Growth in the Humid and Arid Regions. New York: The Macmillan Company, 1918.
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