Woll, F. W. (1915). Productive feeding of farm animals. J.B. Lippincott company.
Lua i Stíl Chicago (17ú heag.)Woll, F. W. Productive Feeding of Farm Animals. Philadelphia, London: J.B. Lippincott company, 1915.
Lua MLA (8ú heag.)Woll, F. W. Productive Feeding of Farm Animals. J.B. Lippincott company, 1915.
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