Singh, Ashok Kumar  <br/><br/>
Science & Technology for civil services examinations 

 - New Delhi  Tata Mc Graw Hill  2013 
 - 646p. 
<br/><br/><label>ISBN: </label>9780070655485 
<br/><br/><label>Subjects--Index Terms: </label>Science & technology - Civil service examination 
<br/><br/><label>Universal Decimal Class. No.: </label>(079.1):5/6  / SIN  R