*001721697 *00520250613174150.0 *007ta *008020429s1996 xxu 000 u eng d *00900840cam a22002177c 4500 *019 $bl *035 $a(EXLNZ-47BIBSYS_NETWORK)990209443654702201 *035 $a(NO-LaBS)15051313(bibid) *035 $a(NO-TrBIB)020944365 *035 $a020944365-47bibsys_network *040 $aNO-TrBIB$bnob$ekatreg *24500$aEstimating the productivity of research and development :$ban exploration of GMM methods using data on French and United States manufacturing firms *260 $aCambridge, Mass.$bNBER$c1996 *300 $a31 s. *4901 $aNBER working paper series$vno. 5501 *7001 $aHall, Bronwyn H.$_21441700 *7001 $aMairesse, Jacques$_21441800 *7102 $aNational Bureau of Economic Research (Forente Stater)$_13074800 *830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$vno. 5501$w999105437124702201$_13074900 *901 $a60 *999 $aoai:nb.bibsys.no:990209443654702202$b2021-11-14T20:44:40Z$z990209443654702202 ^