00320nam a2200121 a 450000500170000002000150001708200200003210000260005224500510007825000120012926000350014130000220017620251203091648.0  a0030314720  a658.83,bD, chu  aChurchill, Gilbert A.  aMarketing research: methodological foundations  a5th ed.  aFort WorthbDryden Pressc1991  axxxii,1070p, 24cm