Direct current and audio amplifiers  [videorecording] / 
VTR Industrial Training 
 - Minnesota :  Video Training Resource Inc. /  1988 
 - 1 videodisc (21 min.) :  sd.,col.;  12 cm. 
<br/><br/><label>ISBN: </label>MED0000833(Local) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Amplifiers (Electronics)<br/>Operational amplifiers