Singh, Asok Kumar <br/><br/>
Science and Technology for Civil Services Examination 

 -  2013 
 - TATA McGraw-Hill Education Private Limited New Delhi .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science & technology development--
<br/><br/><label>Dewey Class. No.: </label>UR600  / SIN-S