RT Article T1 Firearms costs, firearms benefits and the limits of knowledge JF The journal of criminal law and criminology VO 86 IS 1 SP 207 OP 220 A1 Polsby, Daniel D. LA English YR 1995 UL https://krimdok.uni-tuebingen.de/Record/1639341234 K1 Schusswaffenkontrolle K1 USA