Pfeifer, R. M. (2003). Cricopharyngeal achalasia in a dog. Canadian Veterinary Medical Association.
Citação norma ChicagoPfeifer, Renate M. Cricopharyngeal Achalasia in a Dog. Canadian Veterinary Medical Association, 2003.
Deismireacht MLAPfeifer, Renate M. Cricopharyngeal Achalasia in a Dog. Canadian Veterinary Medical Association, 2003.
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