RT Article T1 Variability of crime clearance among police agencies JF Police quarterly VO 22 IS 1 SP 82 OP 111 A1 Scott, Thomas L. A2 Vovak, Heather A2 Lum, Cynthia A2 Wellford, Charles F. LA English YR 2019 UL https://krimdok.uni-tuebingen.de/Record/1912740907 DO 10.1177/1098611118796597