Não informado. (1992). Veterinary Radiology & Ultrasound. American College of Veterinary Radiology.
Lua i Stíl Chicago (17ú heag.)Não informado. Veterinary Radiology & Ultrasound. Raleigh, NC: American College of Veterinary Radiology, 1992.
Lua MLA (8ú heag.)Não informado. Veterinary Radiology & Ultrasound. American College of Veterinary Radiology, 1992.
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