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Dyfyniad Arddull ChicagoIan M Intyre and Miodrag Ristic. Diseases of Cattle In the Tropics: Economic Anbd Zoonotic Relevance. London, 1981.
Dyfyniad MLAIan M Intyre and Miodrag Ristic. Diseases of Cattle In the Tropics: Economic Anbd Zoonotic Relevance. London, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.