Disha <br/><br/>
IBPS RRB  Guide for Officer Scale 

 - 7 . . ed. 
 -  DISHA PUBLICATION  2020 
 - F-100p. 
<br/><br/><label>ISBN: </label>9789390711819 
<br/><br/><label>Dewey Class. No.: </label>153.94  / DIS/IBP