Parr, E. A. <br/><br/>
Programmable controllers :  an engineer's guide / 
E.A. Parr. 
 - Oxford ;  Boston :  Newnes,  1993. 
 - x, 325 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0750604980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmable controllers.<br/>Automatic control--Computer programs.<br/>Process control--Computer programs.