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2. Nasopharyngeal and middle ear polypoid masses in five cats;Bradley;Vet Surg,1985
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4. Nasopharyngeal polyps in cats: three case reports and a review of the literature;Parker;J Am Anim Hosp Assoc,1985
5. Tumors of the ear canal;Rogers;Vet Clin North Am Small Anim Pract,1988