Gupta N K <br/><br/>
Business of the telecommunications 

 - New Delhi :  Tata Macgrow Hill,  2021. 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management
<br/><br/><label>Dewey Class. No.: </label>651.7  / GUP