I. International co-ordination of drug trials. II. Rheumatological research, and the fight against rheumatic diseases in Switzerland / editors, K. Fehr [and others] ; papers and discussions held at the "30th anniversary of the European League against Rheumatism" in Zurich, 28th-30th April, 1977.
European League against Rheumatism. Anniversary 1977 : Zurich, Switzerland) | Date: [1977?]