Basic electricity and electronics [video cassette] : alternating current. 

 - England  Audio Visual Source  19--. 
 - 10 video cassette  sd., col.  1/2 in. 
<br/><br/> Colour recording systems: VHS/NTSC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric engineering<br/>Electric measurements--Technique<br/>Electronics--Vocational guidance<br/>Oscilloscopes
<br/><br/><label>Dewey Class. No.: </label>621.3 BAC 19--