Schum, John L. <br/><br/>
Locksmithing and electronic security wiring diagrams / 
John L. Schum. 
 - New York :  McGraw-Hill,  c2002. 
 - xii, 275 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0071393056 (pbk. : alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic locking devices.<br/>Electric wiring--Charts, diagrams, etc.
<br/><br/><label>Dewey Class. No.: </label>621.38928 SCH