Webb, John W.    <br/><br/>
Programmable logic controllers :   principles and applications /  
John W. Webb [and] Ronald A. Reis    
 - 4th. ed.    
 - Upper SaddleRiver, New Jersey :  Prentice Hall,   1999. 
 - xv, 443p. :  ill. ;   25cm.    
<br/><br/>Includes bibliography and index    
<br/><br/><label>ISBN: </label>0136794084 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmable controller   
<br/><br/><label>LC Class. No.: </label>TJ223.P76  / .W43 1999