Indian Coast Guard Yantric Electronics and Communication ( Diploma Level )Exam / 
Sura College of Competition 
 - Chennai :  Sura college of competition ,  2022 
 - 564 pages 
<br/><br/><label>ISBN: </label>9789390024919 
<br/><br/><label>Dewey Class. No.: </label>621.381  / APA