Marx, Gary T. <br/><br/>
Undercover :  police surveillance in America  

 - Berkeley :  University of California Press,  1988. 
 - xxv, 283 p. 
<br/><br/><label>ISBN: </label>0520062868 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Undercover operations--United States<br/>Criminal investigation<br/>Police patrol
<br/><br/><label>Dewey Class. No.: </label>363.232