TY  - BOOK
AU  - Ferber Robert
TI  - Statistical techniques in market research
U1  - X;51:B28, H9 
PY  - 1949///
CY  - NY
PB  - Mcgraw-Hill          
KW  - Marketing IRT Mathematics
N1  - Bibliography p 413-30; Appendix p 413-525
ER  -