Agrahari, Ravi P.  _ <br/><br/>
Science and technology for civil services examinations  _ 

 - New Delhi  McGraw Hill  2017 
 - 850 p. in various pagings.  PB  24 cm. 
<br/><br/><label>ISBN: </label>9789352405705 
<br/><br/><label>Subjects--Personal Names: </label>   _ 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Science and technology<br/>Civil services examinations
<br/><br/><label>Dewey Class. No.: </label>351.0765  / AGR