4 1 30 BERKOWITZ, Eric N. Primary Author KERIN, Roger A. Additional Author HARTLEY, Steven W. Additional Author RUDELIUS, William Additional Author mixed material 0256189684 NEW YORK Irwin McGraw-Hill 1986 Marketingb.jpeg.jpeg Cases and Comments KERIN, Roger A. Primary Author PETERSON, Robert A. Additional Author mixed material 0205121292 BOSTON Allyn and Bacon 1990 Strategic_Marketing_Problems_Cases_and_Comments_5th_ed.jpg Cases and Comments KERIN, Roger A. Primary Author PETERSON, Robert A. Additional Author mixed material 0131817698 NEW JERSEY Prentice Hall 1978 Strategic_Marketing_Problems_Cases_and_Comments_7th_ed.jpg BERKOWITZ, Eric N. Additional Author KERIN, Roger A. Additional Author HARTLEY, Steven W. Additional Author RUDELIUS, William Additional Author mixed material NEW YORK McGraw-Hill 1986 Marketing_6th_ed.jpg