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*1001 $aKlette, Tor Jakob$0(NO-TrBIB)90295797$_14827300
*24510$aInnovating firms and aggregate innovation$cTor Jakob Klette, Samuel Kortum
*260  $aCambridge, Mass.$bNational Bureau of Economic Research$c2002
*300  $a43 s.$bill.
*4901 $aWorking paper series / National Bureau of Economic Research$v8819
*7001 $aKortum, Samuel$0(NO-TrBIB)90939150$_35705700
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