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101   $aeng
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200 1 $aExploring the black box$etechnology, economics, and history$fNathan Rosenberg
210   $aCambridge$cCambridge University Press$dc1994
215   $aIX, 274 p.$d23 cm
410  0$12001
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606 0 $aSviluppo economico e progresso tecnico
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700  1$aROSENBERG,$bNathan$010455
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