CLASSEN MEINHARD [red.] 296,485 FRONTIERS Frontiers of Gl [Gastrointestinal] epdoscopy / ed. by Meinhard Classen and Keiichi Kawai, - A)slo : Universitetsforlaget], 1984. - 25 cm Scandinavian Journal of Gastroenterology, ISSN 0085-5928 ; suppl. 102 Nr 2 : a collection of medical papers contributed by leading world endoscopists. - 83 s. : il., wykr.