Flower, Jennifer E Esophageal squamous cell carcinoma in six harbor seals (Phoca vitulina spp.). [electronic resource] - Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians Sep 2014 - 620-31 p. digital Publication Type: Journal Article ISSN: 1042-7260 Standard No.: 10.1638/2012-0218R1.1 doi Subjects--Topical Terms: AnimalsAnimals, ZooCarcinoma, Squamous Cell--pathologyEsophageal Neoplasms--pathologyFemaleMalePhoca