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
13(7) O20526 O21361 O22625
United States. Department of Health, Education, and Welfare. Public Health Service Surgical operations in short-stay hospitals Washington: National Center for Health Statistics, 1971