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*24500$aDropout and enrollment trends in the post-war period :$bwhat went wrong in the 1970s?$cDavid Card, Thomas Lemieux
*260  $aCambridge, Mass.$bNBER$c2000
*300  $a43, [16] s.
*4901 $aNBER working paper series$v7658
*7001 $aCard, David$_16239500
*7001 $aLemieux, Thomas$_33002300
*7102 $aNational Bureau of Economic Research (Forente Stater)$_13074800
*830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v7658$w999105437124702201$_13074900
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*999  $aoai:nb.bibsys.no:990210070714702202$b2021-11-14T20:08:39Z$z990210070714702202
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