ISOMAKI H. A. [red] 296,081 PROCEEDINGS Proceedings of the Finnish-Soviet Symposium on Seronegative Arthritis : Rheumatism Foundation Hospital, Heinola, September 25 - 27, 1983 / ed. H. A. Isomaki and R. von Essen. -Stockholm : Almqvisst and Wiksell, 1984. 92 s. : il., wykr. 26 cm Scandinavian Journal of Rheumatology ; suppl. 52 ISSN 0301-3847