Basic hydraulic eqipment  directional control valves /  [videorecording] : 
 Directional control valves 
AVS Multimedia 
 - East Sussex, England :  AVS Multimedia  1987 
 - 1 videodisc  (16 min.) :  sd., col.;  12 cm. 
<br/><br/><label>ISBN: </label>MED0000734(Local) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydraulic cylinders<br/>Hydraulics<br/>Training<br/>Hydraulic control