Stenerson  <br/><br/>
Fundamentals of programmable logic controllers, sensors, and communications  
/ Jon Stenerson. 
 - 3rd ed.. 
 - Upper Saddle River  Pearson Education  2004. 
 - xvii, 654p.  ill.  25cm+  1 CD ROM (4 3/4 in.) 
<br/><br/> Includes index p.651 - 654 
<br/><br/><label>ISBN: </label>013061890X  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmable controllers<br/>Telecommunication systems
<br/><br/><label>Dewey Class. No.: </label>629.89 STE 2004