Não informado. (1940). Water Resources Review. U.S. Department of the Interior, Geological Survey.
Citace podle Chicago (17th ed.)Não informado. Water Resources Review. Reston, Va: U.S. Department of the Interior, Geological Survey, 1940.
Citace podle MLA (8th ed.)Não informado. Water Resources Review. U.S. Department of the Interior, Geological Survey, 1940.
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