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100   $a20030910d1960----km-y0itay50------ba
101 0 $aeng
102   $aIT
200 1 $aProductivity and Technical Change$fby W.E.G. Salter.
210   $aLondon$cCambridge University Press$d1960.
215   $axi, 198 p.$d25 cm
225 1 $aMonographs$fUniversity of Cambridge. Department of applied economics$v6
610 0 $aInnovazioni tecnologiche
610 0 $aProduttivitą
676   $aG/1.0
700  1$aSalter,$bWilfred E. G.$0105287
801  0$aIT$bUNINA$gRICA$2UNIMARC
901   $aBK
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952   $aG/1.0 SAL/1$b017762$fSES
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959   $aSES
996   $aProductivity and technical change$944980
997   $aUNINA