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*1001 $aEngelhardt, Gary V.$0(NO-TrBIB)2057870$_38222900
*24510$aSocial security and the evolution of elderly poverty$cGary V. Engelhardt, Jonathan Gruber
*260  $aCambridge, Mass.$bNational Bureau of Economic Research$c2004
*300  $a29, [14] s.$bill.
*4901 $aWorking paper series / National Bureau of Economic Research$v10466
*7001 $aGruber, Jonathan$0(NO-TrBIB)99046916$_54891000
*830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v10466$w999105437124702201$_13074900
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