Agrahari, Ravi P. <br/><br/>
Courseware on science and technology :  for UPSC and state civil services examinations / 
Ravi P. Agrahari. 
 - 9th ed. 
 - Chennai :  Mc Graw Hill Education,  2026. 
 - xvi, (661 p.) :ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>9789364445931 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science and technology—India<br/> Science and state—India <br/>Technological innovations—India <br/>Technology—India Science—India
<br/><br/><label>Dewey Class. No.: </label>351.0765 AGR