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*1001 $aBiørn, Erik$d1944-$0(NO-TrBIB)90095035$_10553600
*24510$aIdentifying trend and age effects in sickness absence from individual data :$bsome econometric problems$cErik Biørn
*260  $aOslo$bUniversity of Oslo, Department of Economics$c2010
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*4901 $aMemorandum / Department of Economics, University of Oslo$vNo 20/2010
*533  $aElektronisk reproduksjon$b[Norge]$cNasjonalbiblioteket Digital$d2018-03-16
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*830 0$aMemorandum (Universitetet i Oslo. Økonomisk institutt : trykt utg.)$x0809-8786$vNo 20/2010$w990410975304702201$_13293200
*85641$3Fulltekst$uhttps://urn.nb.no/URN:NBN:no-nb_digibok_2018031609540$yNettbiblioteket$zDigital representasjon
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