Kumar, Vinay <br/><br/>
Science And Technology Question Bank For Civil Services Preliminary Examination / 
Vinay Kumar 
 - 4th edition 
 -  Mhe ,  2022 
 - 384 
<br/><br/><label>ISBN: </label>9789355320025 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competitive Exam
<br/><br/><label>Dewey Class. No.: </label>500.76  / KUM