Electrical maintenance fundamentals  AC/DC theory /  [videorecording] : 
 AC/DC theory 
USA Training 
 - Virginia:  ITC Learning,  2002 
 - 1 videodisc (58 min.) :  sd.,col.;  12 cm. 
<br/><br/><label>ISBN: </label>MED0000773(Local) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric circuits--Alternating current<br/>Electric circuits--Direct current