RT Book T1 Prevention of violence in correctional institutions: papers pres. at the 4. National Symposium on Law Enforcement Science and Technology, May 1-3, 1972 T2 Criminal justice mongraph LA English PP Washington, D.C. PB U.S. Department of Justice, Law Enforcement Assistance Administration YR 1973 UL https://krimdok.uni-tuebingen.de/Record/1098269101 K1 Konferenzschrift