193,250 International International Symposium on Preservatives in Biological Products.Proceedings of the 38th Symposium Organized by the International Association of Biological Standardization and held at the Sheraton-Palace Hotel,639 Market Street, San Francisco, USA 11-13 June 1973. Acting ed, V. J. Cabasso and R. H. Regamey. Basel 1974 S. Karger 4° s.XVII,nlb. 1,271, ilustr. Developments in Biological Standardization vol. 24.