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
610.621 W927(172) 78229
World Health Organization Official Records of the World Health Organization No. 172 Geneva WHO 1969 xii, 255p. Work of WHO 1968 * WHO