303,271 ABSTRACTS Abstracts supplement : British Society for Rheumatology Spring Meeting Oxford 12 April 1991. - London : Publ. by Bailliere and Tindall, 1991. - 39 s. ; 29 cm (British Journal of Rheumatology, ISSN 0263-7103 ; vol. 30, abstracts suppl. nr 1)