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*1001 $aCard, David$0(NO-TrBIB)90728024$_44876200
*24510$aSkill biased technological change and rising wage inequality :$bsome problems and puzzles$cDavid Card, John E. DiNardo
*260  $aCambridge, Mass.$bNational Bureau of Economic Research$c2002
*300  $a49, [16] s.$bill.
*4901 $aWorking paper series / National Bureau of Economic Research$v8769
*7001 $aDiNardo, John$0(NO-TrBIB)97049453$_77853200
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