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100   $a20000920d1994----km-y0itay50------ba
101 0 $aita
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200 1 $aExploring the black box$etechnology, economics, and history$fNathan Rosenberg
210   $aCambridge$cCambridge university press$d1994
215   $aIX, 274 p.$d23 cm
300   $aRist. 1995
700  1$aRosenberg,$bNathan$f<1927- >$010455
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