[Important activities of the World Health Organization and the Pan-American Health Bureau, regional office of the WHO in 1950].
D006262:Health; D006801:Humans; D014481:United States; D014944:World Health Organization
WORLD HEALTH ORGANIZATION
ACTIVIDADES importantes de la organización mundial de la sálud y de la oficina sanitaria panamericana, oficina regional de la O. M. S., en 1950.