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
300.151 B637 68714
Blalock H M Casual inferences in non-experimental research Chapel Hill Univ. of North Carolina Press 1964 xiv,200p. * Social sciences-mathematical models Sociology Sociology-mathematics Sociology-statistics