Stenerson, Jon <br/><br/>
Fundamentals of programmable logic controllers, sensors, and communications / 
Jon Stenerson 
 - 2nd ed 
 - Upper Saddle River, NJ:  Prentice Hall,   1999 
 - xii, 562 p.:   ill.;   24 cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0137461240 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmable controllers<br/>Telecommunication systems