Engel, James F. Promotional strategy / James F. Engel, Hugh G. Wales [and] Martin R. Warshaw. - Homewood, Ill. : R. D. Irwin, c1967 [printing 1969]. - xiii, 665 p. : illus. ; 24 cm. Includes index Subjects--Topical Terms: Marketing.Advertising.Marketing--Management. Dewey Class. No.: 658.82 / ENP 1967