Não informado. (1979). Foreign agriculture circular. U.S. Department of Agriculture, Foreign Agricultural Service.
Cita Chicago Style (17a ed.)Não informado. Foreign Agriculture Circular. Washington: U.S. Department of Agriculture, Foreign Agricultural Service, 1979.
Cita MLA (8a ed.)Não informado. Foreign Agriculture Circular. U.S. Department of Agriculture, Foreign Agricultural Service, 1979.
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