Walker, Samuel. <br/><br/>
The police in America :  an introduction / 

 - 2nd ed. 
 - New York :  McGraw-Hill,  c1992. 
 - xxii, 412 pages :  Illustrations ; 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0070678693 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Police - United States.<br/>Police administration - United States.
<br/><br/><label>LC Class. No.: </label>HV 8138  / WAL