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- Gastritis, peptic ulcer and gastric cancer / edit. M. Kekki. 1991. Vol. 26, Suppl. 186 - Oslo : Universitetsforlaget, 1991 - 150 s.(Scandinavian Journal of Gastroenterology; Suppl. 186) [1, currently available 0, at library only 1]
- Chapters, articles