Kotler, Philip Principles of marketing / Philip Kotler and Gary Armstrong - 5th ed. - New Jersey : Prentice - Hall International,Inc c1991 - xvii,711 p.: ill.(some col.) 25cm Includes index eng ISBN: 0137216890 TZs.10000/- Subjects--Topical Terms: Consumer marketsMarket segmentationPromoting products Dewey Class. No.: 658.8 KOT