1. A pleural-biopsy punch;Abrams;Lancet,1958
2. Pulmonary artery thrombosis in three dogs with hyperadrenocorticism;Burns;J. Am. Vet. Med. Assoc.,1981
3. Mediastinoscopy: A method for inspection and tissue biopsy in the superior mediastinum;Carlens;Dis. Chest,1959
4. New pleural biopsy needle;Cope;J. Am. Vet. Med. Assoc.,1958
5. Transtracheal aspiration biopsy: Technique and cytologic evaluation;Creighton;J. Am. Anim. Hosp. Assoc.,1974