Purpura, Philip P.,  1950- <br/><br/>
Security :  an introduction / 
Philip P. Purpura. 
 - Boca Raton, Fl. :  CRC Press,  2011. 
 - xxv, 611 p. :  ill. ;  27 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781420092837 (hbk.)  RM224.50 1420092839 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Private security services.<br/>Crime prevention.<br/>Security systems.
<br/><br/><label>Subjects--Index Terms: </label>Private security