TY  - BOOK
AU  - Pfaffenerger, Roger C.
AU  - Patterson, James H.
TI  - Statistical methods: for business and economics
T2  - Irwin series in quantitative analysis for business
SN  - 0256017972
U1  - 519.502465 
PY  - 1977///
CY  - Homewood, Illinois
PB  - Richard D.Irwin, Inc.
ER  -