Webb. John W., <br/><br/>
Programmable logic controllers:  Principles and applications/ 
John W. Webb and Ronald A. Reis 
 - 4th ed. 
 - Upper Saddle River, N.J.:  Prentice-Hall,  c1999 
 - xv, 444 p.;  23cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0136794084  $ 81.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmable cotrollers<br/>Control theory<br/>Automatic control<br/>Logic programming
<br/><br/><label>Dewey Class. No.: </label>629.89