*001169890 *00520250613174145.0 *007ta *008020429s1997 xxu 000 u eng d *00900826cam a22002297c 4500 *019 $bl *035 $a(EXLNZ-47BIBSYS_NETWORK)990209624284702201 *035 $a(NO-LaBS)13867179(bibid) *035 $a(NO-TrBIB)020962428 *035 $a020962428-47bibsys_network *040 $aNO-TrBIB$bnob$ekatreg *24500$aContract form and procurement costs :$bthe impact of compulsory multiple contractor laws in construction *260 $aCambridge, Mass.$bNBER$c1997 *300 $a20,[6] s. *4901 $aNBER working paper series$v5916 *7001 $aAshenfelter, Orley C.$_37287700 *7001 $aAshmore, David$_40153700 *7001 $aFiler, Randall$_40153800 *7102 $aNational Bureau of Economic Research (Forente Stater)$_13074800 *830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v5916$w999105437124702201$_13074900 *901 $a60 *999 $aoai:nb.bibsys.no:990209624284702202$b2021-11-14T19:53:53Z$z990209624284702202 ^