Telecommunications technology 
3G E-learning  LLC 
 - New york: 3G E-learning LLC  2019 
 - xii, 246p.: col. Ill.; 23.6cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9781984625717 
<br/><br/><label>Dewey Class. No.: </label>C 621.382 T267 2019