Wentz, Walter B. Marketing: theory and application Walter B. Wentz , Gerald I. Eyrich. - New York Harcourt, Brace & World [1970] - xii, 689 p. illus. 24 cm. - Harbrace series in business and economics . Includes bibliographical references. ISBN: 0155551108 LCCN: 74105696 Subjects--Topical Terms: Marketing LC Class. No.: HF5415 / .W395 Dewey Class. No.: 658.8