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230412s1998 xxua gr ||||||eng d |
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|a Sistema de Bibliotecas de Universidad de Costa Rica
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| 245 |
1 |
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|a Life cycles schooling and dynamic selection bias :
|b models and evidence for five cohorts of american males /
|c Stephen V. Cameron, James J. Heckman.
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| 260 |
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|a Cambridge, MA :
|b National Bureau of Economic Research,
|c 1998.
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| 300 |
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|a 92 hojas aproximdamente :
|b ilustraciones en blanco y negro.
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| 490 |
0 |
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|a Working paper
|v 6385
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| 700 |
1 |
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|a Heckman, James J
|e Autor/a
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| 949 |
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|a -AEM
|