RT Article T1 Systematic Observation of Public Police: Applying Field Research Methods to Policy Issues A1 Mastrofski, Stephen D. A2 Terrill, William 1965- A2 Snipes, Jeffrey B. A2 DeJong, Christina 1967- A2 Worden, Robert E. 1955- A2 Reiss, Albert J. 1922-2006 A2 Parks, Roger B. LA English PB United States Department of Justice, National Institute of Justice YR 1998 UL https://krimdok.uni-tuebingen.de/Record/1912720248