Principles of internet technologies / 
3G E-Learning LLC 
 - New York :  3G E-Learning LLC,  2018. 
 - vii, 234 p.: col. ill.; 23.5 cm 
<br/><br/>Includes references and index 
<br/><br/><label>ISBN: </label>9781682514085 
<br/><br/><label>Dewey Class. No.: </label>C 004.678 P957 2018