Principles of internet technologies / 
3G E-Learning 
 - 2nd edition. 
 - New York :  3G E-Learning,   c2020. 
 - ix, 267 pages :  color illustrations. 
<br/><br/> Includes references and index. 
<br/><br/><label>ISBN: </label>9781984636874 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World Wide Web<br/>Computer networks<br/>Internet
<br/><br/><label>Dewey Class. No.: </label>004.678   / T531 2020