Não informado. (2008). Journal of Swine Health and Production. American Association of Swine Veterinarians.
Citace podle Chicago (17th ed.)Não informado. Journal of Swine Health and Production. Perry, Iowa: American Association of Swine Veterinarians, 2008.
Citace podle MLA (8th ed.)Não informado. Journal of Swine Health and Production. American Association of Swine Veterinarians, 2008.
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