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
300.723 D979 C26022
Dutta Roy Debdulal Principles of questionnaire development with empirical studies New Delhi Prasad Psycho 2010 143p. 978-81-90992-31-2 * Questionnaires Social sciences-research