Ries, Al. Marketing warfare / by Al Ries and Jack Trout. - New York : McGraw-Hill, c1986. - viii, 216 p., [2] leaves of plates : ill. ; 21 cm. Includes index. ISBN: 007052730X LCCN: 85014957 Subjects--Topical Terms: Marketing.Competition. LC Class. No.: HF 5415 / .R544 1986