Marx, Gary T. <br/><br/>
Undercover: police surveillance in America 
by Gary T. Marx 
 - Berkeley  University of California Press  1988 
 - 283p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Police patrol --Surveillance operations<br/>Criminal investigation --United States<br/>Undercover operations --United States
<br/><br/><label>Dewey Class. No.: </label>N4x73 M369