Não informado. (1957). Avian Diseases. American Association of Avian Pathologists.
Lua i Stíl Chicago (17ú heag.)Não informado. Avian Diseases. kennett Square, Pa: American Association of Avian Pathologists, 1957.
Lua MLA (8ú heag.)Não informado. Avian Diseases. American Association of Avian Pathologists, 1957.
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