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*019  $bl
*035  $a(EXLNZ-47BIBSYS_NETWORK)990209948264702201
*035  $a(NO-LaBS)13446947(bibid)
*035  $a(NO-TrBIB)020994826
*035  $a020994826-47bibsys_network
*040  $aNO-TrBIB$bnob$ekatreg
*24500$aUnskilled migration :$ba burden or a boon for the welfare state
*260  $aCambridge, Mass.$bNBER$c1999
*300  $a23 s.
*4901 $aNBER working paper series$v7013
*7001 $aRazin, Assaf$_13234600
*7001 $aSadka, Efraim$_16193500
*7102 $aNational Bureau of Economic Research (Forente Stater)$_13074800
*830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v7013$w999105437124702201$_13074900
*901  $a60
*999  $aoai:nb.bibsys.no:990209948264702202$b2021-11-14T19:53:49Z$z990209948264702202
^