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200 1 $aExternalities, knowledge, spillovers and the spatial distribution of innovation$fRaffaele Paci, Stefano Usai
210   $a[S.l.$cs.n.]$d2000
225 1 $aContributi di ricerca$fCRENoS, Centro ricerche economiche Nord Sud, Università degli studi di Cagliari$v2000
610 0 $aInnovazioni tecnologiche$aAspetti economici
700  1$aPaci,$bRaffaele$0115539
701  1$aUsai,$bStefano$0122755
801  0$aIT$bUNINA$gRICA$2UNIMARC
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996   $aExternalities, knowledge, spillovers and the spatial distribution of innovation$9514705
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