RT Book T1 Guns, drugs and juvenile crime: evidence from a panel of siblings and twins T2 Working paper series / National Bureau of Economic Research JF Working paper A1 Mocan, Naci A1 Tekin, Erdal A2 Tekin, Erdal LA English PP Cambridge, Mass. PB National Bureau of Economic Research YR 2003 UL https://krimdok.uni-tuebingen.de/Record/1176156055 CN 330.072