Não informado. (1894). Circular. U.S. Department of Agriculture, Bureau of Animal Industry.
Citace podle Chicago (17th ed.)Não informado. Circular. Washington: U.S. Department of Agriculture, Bureau of Animal Industry, 1894.
Citace podle MLA (8th ed.)Não informado. Circular. U.S. Department of Agriculture, Bureau of Animal Industry, 1894.
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