THE DEVELOPMENT OF BRONCHOSCOPY AT JEFFERSON.
D001999:Bronchoscopy; D006664:History; D049672:History, 19th Century; D049673:History, 20th Century; D008511:Medicine; D010414:Pennsylvania; D012574:Schools; D012577:Schools, Medical
BRONCHOSCOPY; HISTORY; HISTORY OF MEDICINE, 19TH CENT.; HISTORY OF MEDICINE, 20TH CENT.; PENNSYLVANIA; SCHOOLS, MEDICAL