Ch Kranthi Rekha <br/><br/>
Digital communication 

 - 2 Ed. 
 - Pune  Scitech Publication Pvt. Ltd.  2009 
 - C 1 TO 9p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ETC
<br/><br/><label>Dewey Class. No.: </label>621.382