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|a GrThPMO
|
| 050 |
1 |
4 |
|a HB1
|b .N38 no.14706
|
| 100 |
1 |
4 |
|a Heckman, James J.
|q (James Joseph)
|
| 245 |
1 |
4 |
|a Comparing IV with structural models :
|b what simple IV can and cannot identify /
|c James J. Heckman, Sergio Urzua.
|
| 246 |
3 |
4 |
|a Comparing instrumental variables with structural models.
|
| 260 |
3 |
4 |
|a Cambridge, MA :
|b National Bureau of Economic Research,
|c 2009.
|
| 300 |
3 |
4 |
|a 32 p. :
|b ill. ;
|c 22 cm.
|
| 490 |
1 |
4 |
|a NBER working paper series ;
|v no. 14706.
|
| 504 |
1 |
4 |
|a Includes bibliographical references (p. 26-28).
|
| 650 |
1 |
4 |
|a Instrumental variables (Statistics)
|
| 650 |
1 |
4 |
|a Economics
|x Statistical methods
|
| 700 |
1 |
4 |
|a Urzua, Sergio,
|
| 710 |
2 |
4 |
|a National Bureau of Economic Research
|
| 952 |
|
|
|a GrThPMO
|b 59b0147d6c5ad17d7e5ad38c
|c 952a
|d 9528
|e HB1.N38 no.14706
|t 7
|x m
|z Books
|
