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100   $a20030910d1978----km-y0itay50------ba
101 0 $aeng
102   $aUS$aGB
105   $ay---n---001yy
200 1 $aGeneral X-Efficiency Theory and Economic Development$fHarvey Leibenstein
210   $aNew York$aLondon$cOxford University Press$d1978
215   $aX, 189 p.$d21 cm
225 1 $aEconomic development series
610 0 $aSviluppo economico
676   $a330$v11 rid.$zita
700  1$aLeibenstein,$bHarvey$0103465
801  0$aIT$bUNINA$gRICA$2UNIMARC
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996   $aGeneral X-Efficiency Theory and Economic Development$9515296
997   $aUNINA