DUNCAN, Delbert J. Hollasnder, S.C. Progrmmed learning aid for retailing: modern concepts and practices /[by] Delbert J.Duncan, Stanley C.Hollasnde; edited by Roger H.Hermanson - 3rd ed. - Homewood Richard D.Irwin 1979 - xi, 196 p.- - Programmed learning aid series. . Includes index. ISBN: 256022453 Subjects--Topical Terms: Management Dewey Class. No.: 658 / DUN