Lewis, R.W. <br/><br/>
Programming industrial control systems using IEC 1131-3   
by R W Lewis 
 - London  IEE  1995 
 - xvi, 293p. 
 - IEE Control engineering series, Vol 50 .
<br/><br/><label>ISBN: </label>0852968272 
<br/><br/><label>Dewey Class. No.: </label>629.895  / N95