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100   $a20000920d1996----km-y0itay50------ba
101 0 $aita
105   $ay-------001yy
200 1 $aInternational productivity differences$emeasurement and explanations$fKarin Wagner, Bart van Ark
210   $aAmsterdam$cElsevier Science$d1996
215   $a325 pp.$d18 cm
225 1 $aContributions to economic analysis ; 233
700  1$aWagner,$bKarin$0140742
702  1$aArk,$bVan Bart
801  0$aIT$bUNINA$gRICA$2UNIMARC
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996   $aInternational productivity differences$9500687
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