00290nam a2200121 a 450000500170000008200150001710000150003224500270004726000420007430000150011663000140013163000230014520251203090655.0  a658.8bDAV  aDavis, E.J  aExperimental marketing  aBombaybTaraporevala Publishingc1980  a186 p.cPB  aMarketing  aMarketing research