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*008021202s2002    xxu           000 u eng d
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*019  $bl
*035  $a(EXLNZ-47BIBSYS_NETWORK)990229048754702201
*035  $a(NO-LaBS)14544676(bibid)
*035  $a(NO-TrBIB)022904875
*035  $a022904875-47bibsys_network
*040  $aNO-TrBIB$bnob$ekatreg
*1001 $aLichtenberg, Frank R$0(NO-TrBIB)90611297$_30447400
*24514$aThe dual effects of intellectual property regulations :$bwithin- and between- patent competition in the US pharmaceuticals industry$cFrank R. Lichtenberg, Tomas J. Philipson
*260  $aCambridge, Mass.$bNational Bureau of Economic Research$c2002
*300  $a26, [14] s.$bfig.
*4901 $aWorking paper series / National Bureau of Economic Research$v9303
*7001 $aPhilipson, Tomas J$0(NO-TrBIB)90727456$_30447500
*830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v9303$w999105437124702201$_13074900
*901  $a80
*999  $aoai:nb.bibsys.no:990229048754702202$b2021-11-14T19:48:33Z$z990229048754702202
^