Mackay, Steve. <br/><br/>
Practical industrial data networks :  design, installation and troubleshooting / 

 - USA :  Newnes,  c2007. 
 - xv, 421 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780750658072 
<br/><br/><label>LC Class. No.: </label>22666-22670 
<br/><br/><label>Dewey Class. No.: </label>621.382  / MAC