Demling, L. Endoscopy and biopsy of the esophagus and stomach / by L. Demling, R. Ottenjann [and] K. Elster ; translated from the German and adapted by Konrad H. Soergel - Philadelphia : Saunders, 1972 - xiii, 126 p. : ill. ; 26 cm. ISBN: 0721630138 : USD 20.00 Subjects--Topical Terms: EsophagoscopyGastroscopyEsophagus--BiopsyStomach--Biopsy Dewey Class. No.: 616.32075