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*019  $bl
*035  $a(EXLNZ-47BIBSYS_NETWORK)990209916304702201
*035  $a(NO-LaBS)15046318(bibid)
*035  $a(NO-TrBIB)020991630
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*040  $aNO-TrBIB$bnob$ekatreg
*24500$aProductivity differences
*260  $aCambridge, Mass.$bNBER$c1999
*300  $a44 s.
*4901 $aNBER working paper series$v6879
*7001 $aAcemoglu, Daron$_32884100
*7001 $aZilibotti, Fabrizio$_28486100
*7102 $aNational Bureau of Economic Research (Forente Stater)$_13074800
*830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v6879$w999105437124702201$_13074900
*901  $a60
*999  $aoai:nb.bibsys.no:990209916304702202$b2021-11-14T19:50:59Z$z990209916304702202
^