TY  - BOOK
AU  - Ashenfelter,Orley
AU  - Levine,Phillip B.
AU  - Zimmerman,David J.
TI  - Statistics and econometrics: methods and applications 
SN  - 0470009454
PY  - 2003///
CY  - New York
PB  - J. Wiley
KW  - Social sciences
KW  - Statistics
KW  - Econometrics
ER  -