Não informado. (1909). Bulletin of the Department of Agriculture, Trinidad and Tobago. Trinidad and Tobago Department of Agriculture.
Citace podle Chicago (17th ed.)Não informado. Bulletin of the Department of Agriculture, Trinidad and Tobago. Port of Spain: Trinidad and Tobago Department of Agriculture, 1909.
Citace podle MLA (8th ed.)Não informado. Bulletin of the Department of Agriculture, Trinidad and Tobago. Trinidad and Tobago Department of Agriculture, 1909.
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