Udell, Jon G. Marketing in an age of change : an introduction / Jon G. Udell, Gene R. Laczniak. - New York : Wiley, c1981. - xix, 588 p. : ill. ; 24 cm. & - Wiley series in marketing . Includes bibliographies and index. ISBN: 0471081698 Subjects--Topical Terms: Marketing.Marketing--Management. Dewey Class. No.: 658.8 / UDM 1981