Não informado. (1912). Bulletin of the Department of Agriculture, Ceylon. Department of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Bulletin of the Department of Agriculture, Ceylon. Colombo: Department of Agriculture, 1912.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Bulletin of the Department of Agriculture, Ceylon. Department of Agriculture, 1912.
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