GEC journal 

 - London :  General Electric of England,  1930- 
 - v. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ELECTRICIDAD<br/>INDUSTRIA ELECTRICA<br/>ELECTRONICA<br/>TECNOLOGIA ELECTRICA
<br/><br/><label>Universal Decimal Class. No.: </label>621.3