TY  - BOOK
AU  - Tull Donald S
AU  -  Hawkins Del I
TI  - Marketing research:  Measurement and method  A text with cases  
SN  - 0024217808
U1  - X:51b4, L6;M4/TD3 
PY  - 1984///
CY  - New York
PB  - Macmillan         
KW  - Marketing
N1  - Appendix: P716-80
ER  -