TY  - BOOK
AU  - Pfaffenberger, Roger C  .
TI  - Statistical methods for business and economics / 
SN  - 0-256-01797-2
U1  - X:74ObB28 
PY  - 1977///
CY  - illinois : 
PB  - Richard D Irwin, Inc , 
KW  - Statistical methods
ER  -