Electrical technology / 
3G E-Learning. 
 - New York:  3G E-Learning,  c2019. 
 - x, 245 p. :   col. ill. ;  24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>978-1-98462-568-7 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical technology.