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*008131213s2003    xxu           000 u eng d
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*019  $bl
*035  $a(EXLNZ-47BIBSYS_NETWORK)990305173464702201
*035  $a(NO-LaBS)14518622(bibid)
*035  $a(NO-TrBIB)030517346
*035  $a030517346-47bibsys_network
*040  $aNO-TrBIB$bnob$ekatreg
*1001 $aHeckman, James$0(NO-TrBIB)3029691$_30367500
*24510$aUsing matching, instrumental variables and control functions to estimate economic choice models$cJames Heckman, Salvador Navarro-Lozano
*260  $aCambridge, Mass.$bNational Bureau of Economic Research$c2003
*300  $a39, [7] s.$bfig.
*4901 $aWorking paper series / National Bureau of Economic Research$v9497
*7001 $aNavarro-Lozano, Salvador$0(NO-TrBIB)3029714$_30367600
*830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v9497$w999105437124702201$_13074900
*901  $a80
*999  $aoai:nb.bibsys.no:990305173464702202$b2021-11-14T19:48:32Z$z990305173464702202
^