TY  - BOOK
AU  - Heckman,James J.
AU  - Leamer,Edward E.
TI  - Handbook of econometrics
SN  - 9780444532008
U1  - 330.015195 
PY  - 2007///
CY  - New York
PB  - Elsevier, North-Holland
KW  - ECONOMETRIA
KW  - MANUALES
ER  -