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100   $a20030910d1989----km-y0itay50------ba
101 0 $aeng
102   $aNL
200 1 $aEfficiency analysis by production frontiers the non parametric approach$fJati K. Sengupta
210   $aBoston ; Dordrecht ; London$cKluwer Academic$d1989
215   $a246 p.$d22 cm
225 1 $aTheory and decision library$hSeries D$iSystem theory, knowledge engineering and problem solving
700  1$aSengupta,$bJati Kumar$012436
801  0$aIT$bUNINA$gRICA$2UNIMARC
901   $aBK
912   $a990002104030403321
952   $a62 338.3/.5 SEN$bDEPA 6567$fDAGEA
959   $aDAGEA
996   $aEfficiency analysis by production frontiers the non parametric approach$9394646
997   $aUNINA