Cunningham, John Edward, <br/><br/>
Security electronics 
John E. Cunningham 
 - 1st ed. 
 - Indianapolis  H. W. Sams  c1970 
 - 159 p.  illus.  22cm 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>057200740X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic security systems