Online Public Access Catalogue (OPAC)Library,Documentation and Information Science Division
“A research journal serves that narrow
borderland which separates the known from the unknown”
-P.C.Mahalanobis
O16963
United States., Dept. of Health, Education, and Welfare. Public Health Service Fertility and educational attainment: Puerto Rico - 1962 Washington, D.C.: National Center for Health Statistics, 1967 - (Vital and Health Statistics 21-12) * Administrative Report * Series