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
658.8/02 Weylman, C. Richard. Opening closed doors : keys to reaching hard-to-reach people / C. Richard Weylman. - Burr Ridge, IL : Irwin Professional Pub., c1994. xiii, 260 p. : ill. ; 24 cm. 0786301546 9780786301546 * Market segmentation. Selling.