Callahan, W.Thomas <br/><br/>
Prevention and control of collective violence/ 
by W.Thomas Callahan 
 - Washington :  National Institute of Law Enforcement and Criminal Justice ,  1973 
 - v ;  27 cm. 
 - National Institute of Law Enforcement and Criminal Justice. .
<br/><br/> Papers on related topics presented at the Fourth National Symposium on Law Enforcement Science and Technology, June, 1973  Library has v.1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Criminal Justice, Administration of--United States
<br/><br/><label>Dewey Class. No.: </label>345.73