RT Article T1 The reliability of police employee counts: Comparing FBI and ICMA data, 1954–2008 JF Journal of criminal justice VO 39 IS 5 SP 445 OP 451 A1 King, William R. A2 Heinonen, Justin A. A2 Cihan, Abdullah LA English YR 2011 UL https://krimdok.uni-tuebingen.de/Record/1912684284 DO 10.1016/j.jcrimjus.2011.08.002