Ballistic helmets on patrol/ 
by David Griffith 
 - California:  Bobit Business Media,  2017 
 - page 46-52 
 - Vol.41 No.5 (May 2017) 
 - Police the Law Enforcement Magazine  page 46-52  Vol.41 No.5  0893-8989 .
<br/><br/><label>ISSN: </label>0893-8989 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Police - Equipment and supplies
<br/><br/><label>Dewey Class. No.: </label>BPer. 363.205  / P75