General engineering  For rrb nhpc iol dmrc ongc sail gail upcl and other public sector examinations 

 - New Delhi  G. K. Publications Pvt Ltd.  2022 
 - C. 1 to 22p. 
<br/><br/><label>ISBN: </label>9789392837654 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COMPETITIVE EXAM
<br/><br/><label>Dewey Class. No.: </label>620