Boyd, Harper W. Marketing research : text and cases / Harper W. Boyd, Jr., Ralph Westfall and Stanley F. Stasch. - 4th ed. - Homewood, Ill. : R.D. Irwin, c1977. - xii, 692 p. : ill. ; 24 cm. Includes index. ISBN: 0256018383 Subjects--Topical Terms: Marketing research.Marketing research--Case studies. Dewey Class. No.: 658.83 / BOM 1977