TY  - BOOK
AU  - Tull Donald S
AU  -  Hawkins Del I
TI  - Marketinf research:  Measurement and methods   
SN  - 002421910
U1  - X:51b4, L6;M7/TD3 
PY  - 1987///
CY  - New York
PB  - Macmillan         
KW  - Marketing
N1  - Appendix: P750-817
ER  -