RT Article T1 Community-based policing: Implementation and impact JF Canadian journal of criminology VO 33 IS 3/4 SP 469 OP 484 A1 Clairmont, Donald H. J. LA English YR 1991 UL https://krimdok.uni-tuebingen.de/Record/1639977015 K1 Community Policing K1 Policing K1 Kanada