WALKER Orville C. Marketing strategy A decision-focused approach. WALKER Orville C.; MULLINS John W. - 7th - New Delhi McGraw Hill 2011 - xv,352p. cm. ISBN: 9789339205263 552.5 Source: 2829, 17/03/2015, VIBHA BOOKS INTERNATIONAL General Book Dewey Class. No.: X:8:(S:44), P6;Q1