Merritt, Herbert. <br/><br/>
Hydraulic control systems 

 - New York :   Wiley,   1967. 
 - 358 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>VALVULAS DE CONTROL<br/>BOMBAS<br/>SERVOMECANISMOS
<br/><br/><label>Universal Decimal Class. No.: </label>621.6