*00141505 *00520250613174254.0 *007ta *008020424s2001 xxu 000 u eng d *00900772cam a22002057c 4500 *019 $bl *035 $a(EXLNZ-47BIBSYS_NETWORK)990210270214702201 *035 $a(NO-LaBS)14329899(bibid) *035 $a(NO-TrBIB)021027021 *035 $a021027021-47bibsys_network *040 $aNO-TrBIB$bnob$ekatreg *24500$aAlcohol and marijuana use among college students :$beconomic complements or substitutes?$cJenny Williams ... [et al.] *260 $aCambridge, Mass.$bNBER$c2001 *300 $a29, [7] s. *4901 $aNBER working paper series$v8401 *7001 $aWilliams, Jenny$_20355100 *7102 $aNational Bureau of Economic Research (Forente Stater)$_13074800 *830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v8401$w999105437124702201$_13074900 *901 $a60 *999 $aoai:nb.bibsys.no:990210270214702202$b2021-11-14T19:43:23Z$z990210270214702202 ^