Não informado. (2020). Progress in Cattle & Sheep Practice. American Veterinary Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Progress in Cattle & Sheep Practice. Wheaton, Ill: American Veterinary Publications, 2020.
Lua MLA (8ú heag.)Não informado. Progress in Cattle & Sheep Practice. American Veterinary Publications, 2020.
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