532,678 VACCINATIONS Vaceinations in the developing countries . XVtk IABS International Congress for Bio- ­ logical Standardization. Proceedings of a Symposium org."by the International Association of Biological Standardization and held at the Hotel . . . Le Gosier ,Guade­ loupe 16-20 April 1978.Actinged.R .H .Regamey Basel 1978 S .Karger 8 -b .X , 446, i l . Developm ents in Biological Standardization vol . 41