RT Book T1 Communication and law enforcement A1 Gundersen, D. F. A1 Hopper, Robert LA English PP New York usw. PB Harper & Row YR 1984 UL https://krimdok.uni-tuebingen.de/Record/165081562X NO Bibliography: p173-175. - Includes index CN P90 SN 0060425563 K1 Communication- For police