UNITED STATES DEPARTMENT OF AGRICULTURE. (1964). A manual on conservation of soil and water. Oxford and IBH.
Citace podle Chicago (17th ed.)UNITED STATES DEPARTMENT OF AGRICULTURE. A Manual on Conservation of Soil and Water. New Delhi: Oxford and IBH, 1964.
Citace podle MLA (9th ed.)UNITED STATES DEPARTMENT OF AGRICULTURE. A Manual on Conservation of Soil and Water. Oxford and IBH, 1964.
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