Smith, Dave <br/><br/>
The Crowd/ 
Dave Smith. 
 - California:    Bobit Business Media,   c2015.  
 - page 48;  28 cm. 
<br/><br/> Police: the law enforcement magazine. 
<br/><br/><label>ISSN: </label>0893-8989  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crowds
<br/><br/><label>Dewey Class. No.: </label>DPer 363.205 P75 May-Dec 2015 V. 39