Marketing research
Tull, Donald S.
Marketing research Tull, Donald S. - - New York Macmillan 1976 - xv, 736 p.
24217409
658.835 / TUL
Marketing research Tull, Donald S. - - New York Macmillan 1976 - xv, 736 p.
24217409
658.835 / TUL