Winkler, John. Winkler on marketing planning. eng Winkler, John. - London, Associated Business Programmes Ltd.; Distributed by Cassell, 1972. - xii, 291 p. illus. 24 cm. Includes index. Bibliography: p. [279]-281. ISBN: 0304290777 LCCN: Subjects--Topical Terms: Marketing.Planning. Dewey Class. No.: 658.8 / WIN