RT Book T1 The signs of crime: a field manual for police A1 Powis, David LA English PP London New York PB McGraw-Hill YR 1977 UL https://krimdok.uni-tuebingen.de/Record/1613538650 NO Bibliography: p. 229-230 NO Includes index CN HV8031 SN 0070844992 K1 Police : Handbooks, manuals, etc K1 Law enforcement : Handbooks, manuals, etc K1 Crime : Handbooks, manuals, etc