Não informado. (1924). Agricultural situation. U.S. Department of Agriculture, Agricultural Marketing Service.
Citace podle Chicago (17th ed.)Não informado. Agricultural Situation. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1924.
Citace podle MLA (8th ed.)Não informado. Agricultural Situation. U.S. Department of Agriculture, Agricultural Marketing Service, 1924.
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