DELTENRE M. 305,180 HELICOBACTER Helicobaster pylori in peptic ulcer disease : Proceedings of a Symposium held in Brussels, Belgium, 23 September 1993 / ed. by H. Deltenre and P. Malfertheiner. - Oslo [etc.] : Scandinavian University Press, 1994. - [4], 60 s. : il. ; 28 cm (ISBN 0085-5928 ; vol. 29, suppl. 205) (Scandinavian Journal of Gastroenterology