Parr, Andrew <br/><br/>
Hydraulics and Pneumatics : A technician's and Engineer's Guide 

 - Elsevier	London  Elsevier	London  2011 
 - pg 238 
<br/><br/><label>ISBN: </label>978-0-08-096674-8 
<br/><br/><label>Publisher. No.: </label> Allied Informatics 
<br/><br/><label>Dewey Class. No.: </label>621.2  / PAR