Ries, Al. The 22 immutable laws of marketing : violate them at your own risk / Al Ries and Jack Trout. - xii, 143 páginas : ilustraciones, 22 cm ISBN: 9780887305924 088730592x 088730592X 9780887306662 0887306667 LCCN: 92053334 Subjects--Topical Terms: Mercadeo. Dewey Class. No.: 658.8 / R559va 1994