DEVELOPMENTS IN BIOLOGICAL STANDARIZATION vol.41 532,678 Vaccinations in the developing countries. XVth LABS International Congress for Biological Standardization.Proceedings of a Symposium org.by the International Association of Biological Standardisation and held at the Hotel... Le Gosier,Guadeloupe 16—20 April 1978.Acting ed.R.H.Regamey Basel 1978 S.Karger 8 s.X, 446, il. Developments in Biological Standardization vol. 41