TY  - BOOK
AU  - Callahan,W.Thomas
ED  - United States.
TI  - Prevention and control of collective violence
U1  - 345.73 
PY  - 1973///
CY  - Washington
PB  - National Institute of Law Enforcement and Criminal Justice
KW  - Criminal Justice, Administration of
KW  - United States
N1  - Papers on related topics presented at the Fourth National Symposium on Law Enforcement Science and Technology, June, 1973; Library has v.1
ER  -