1. On auscultation of the oesophagus Author(s): Elsberg, Louis, 1836-1885, author Publication: Philadelphia : Collins, Printer, 1875 Subject(s): Esophageal Diseases -- diagnosisAuscultation -- methods
2. The inspection of the œsophagus and the cardia Author(s): Einhorn, Max, 1862-1953 Publication: [New York] : D. Appleton and Co., c1897 Subject(s): Esophagoscopy -- instrumentationEsophagus -- pathologyEsophageal Diseases -- diagnosis
