RT Book T1 Plainclothes and off-duty officer survival: a guide to survival for plainclothes officers, undercover officers, and off-duty police officers A1 Cheek, John C. A1 Lesce, Tony LA English PP Springfield, Ill. PB Thomas YR 1989 UL https://krimdok.uni-tuebingen.de/Record/1645461025 SN 0398055289