EFY megazine, . <br/><br/>
EFY /  Textual Documents 
EFY. 
 - ND :  EFY Ltd ,  1978. 
<br/><br/><label>Subjects--Index Terms: </label>Cd-Electronics 
<br/><br/><label>Dewey Class. No.: </label>001.64  / EFY