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
000SA.081 C663 110673 110674 45190 91171 93936 93938 93939 93942 PC1669
Cochran William G Sampling techniques 3rd. - New York John Wiley 1977 xvi,428p. 0-471-60180-2 * Sampling(Statistics)