title: XVth IABS International Congress for Biological Standardization: vaccinations in the developing countries. Proceedings of a symposium organized by the international association of biological standardization.
mesh_terms: D000486:Allergy and Immunology; D000818:Animals; D003226:Congresses as Topic; D003906:Developing Countries; D006801:Humans; D011315:Preventive Medicine; D014611:Vaccination