RT Article T1 Police strategies to reduce illegal possession and carrying of firearms: effects on gun crime JF Campbell Systematic Reviews VO 8 IS 1 SP 1 OP 53 A1 Koper, Christopher S. A2 Mayo-Wilson, Evan A2 Smith, John LA English YR 2012 UL https://krimdok.uni-tuebingen.de/Record/1550642707 CN 360 340 K1 Waffenbesitz K1 Strategie K1 Schusswaffe K1 Schusswaffenmissbrauch K1 Waffengewalt K1 Schusswaffenkontrolle DO 10.15496/publikation-6105