Lal, Dr. & Jain <br/><br/>
Drdo Multi Tasking Staff Computer Based Exam. (Tier-I) 
/ Dr. Lal & Jain 
 - 1st edition 
 -  Upkar Prakashan  2023 
 - 240 pages 
<br/><br/><label>ISBN: </label>9789389664201 
<br/><br/><label>Dewey Class. No.: </label>621.389  / LAL