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102   $aUS$aGB
105   $ay-------001yy
200 1 $aInnovation and growth in the global economy$fGene M. Grossman and Elhanan Helpman
210   $aCambridge (Mass.)$aLondon$cThe MIT press$dc1991
215   $aXIV, 359 p.$d24 cm
500 10$aInnovation and growth in the global economy$933400
610 1 $aCommercio internazionale
610 1 $aSviluppo economico e progresso tecnico
700  1$aGrossman,$bGene M.$0119095
701  1$aHelpman,$bElhanan$0128673
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996   $aInnovation and growth in the global economy$933400
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