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2. Nasal tumors in the dog: retrospective evaluation of diagnosis, prognosis and treatment;MacEwen;JAVMA,1977
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4. Cryosurgical therapy for nasal tumors in the dog;Withrow;JAAHA,1982
5. Cryosurgical treatment of cancerous and noncancerous diseases of dogs, horses, and cats;Krahwinkel;JAVMA,1976