000 00623nam#a2200205#c#4500
003 IEF
005 20180219164753.0
008 000425s1998 ESP##d#fr####| 0||u|SPA|u
040 _aIEF
041 _aSPA
100 1 _aManski, Charles F.
_927615
245 _aMonotone instrumental variables with an application to the returns to schooling
260 _aCambridge (Mass.)
_bNational Bureau of Economic Research
_c1998
300 _a44 p.
_b graf.;tabl.
_ctabl.;22 cm.
500 _aResumen.- Bibliografía.-Conclusiones
490 _aNBER technical working papers;224
942 _cLIB
942 _z92243
999 _c91852
_d91852