Não informado. (1937). Tobacco situation. U.S. Department of Agriculture, Agricultural Marketing Service.
Chicago-viite (17. p.)Não informado. Tobacco Situation. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1937.
MLA-viite (8. p.)Não informado. Tobacco Situation. U.S. Department of Agriculture, Agricultural Marketing Service, 1937.
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