Não informado. (1950). Forest Resource Report. U.S. Department of Agriculture, Forest Service.
Citace podle Chicago (17th ed.)Não informado. Forest Resource Report. Washington: U.S. Department of Agriculture, Forest Service, 1950.
Citace podle MLA (8th ed.)Não informado. Forest Resource Report. U.S. Department of Agriculture, Forest Service, 1950.
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