RT Book T1 Traffic policing in changing times T2 Home Office research study T2 A Home Office Research and Planning Unit report JF Home Office research study A1 Southgate, Peter A1 Mirrlees-Black, Catriona LA English PP London PB HMSO YR 1991 ED 1. publ. UL https://krimdok.uni-tuebingen.de/Record/271955384 SN 0113410190