Webb, John W. <br/><br/>
Programmable logic controllers : principles and applications   principles and applications / 
John W. Webb 
 - 2nd ed.. 
 -  c1988. 
<br/><br/><label>ISBN: </label>0029464110 002424970X 
<br/><br/><label>LCCN: </label>94017682  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmable controllers.--General
<br/><br/><label>Dewey Class. No.: </label>629.895 WEB