First WHO Seminar on Expansion of the Use of Immunization ihn Developing Countries, Kumasi, Ghana, 19-19 November 1974. - WHO Seminar on Expansion of the Use of Immunization in Developing Countries 1974 : Kumasi, Ghana) (Geneva : World Health Organization, 1975)
Keywords: INMUNOLOGIA -- CONGRESOS; ENFERMEDADES INFECCIOSAS -- PREVENCION -- CONGRESOS; ENFERMEDADES INFECCIOSAS -- CONGRESOS