Unobtrusive marketing research techniques /
Ray, Michael L.
Unobtrusive marketing research techniques / Michael L. Ray, Peter N. Sherrill. - Stanford: Stanford University, 1972. - 13 p. ; 28 cm. - 81 .
Marketing research
658.83
Unobtrusive marketing research techniques / Michael L. Ray, Peter N. Sherrill. - Stanford: Stanford University, 1972. - 13 p. ; 28 cm. - 81 .
Marketing research
658.83