HENNESSEN W. /red./ 525,555 International WHO-IABS Symposium on Standardization and Control of Allergens Administered to Man. Proceedings of the 35th Symposium organized jointly by the World Health Organization and The International Association of Biological Standardization and held at the WHO auditorium, Geneva,Switzerland 17-19 July,1974.Acting ed.R.H.Regamey,W.Hennessen and P.T.Perkins. Basel 1975 S.Karger 8° s. IX, nlb. 3, 459, nlb. 1, ilustr. Developments in Biological Standardization vol. 29.