Ranjan, Amibh <br/><br/>
IAS mains: General studies-paper3: Technology, Economic development, biodiversity, environment security and disaster management / 
by Amibh Ranjan,  etal. 
 - New Delhi  , 2020. 
 - 713 pages. 
<br/><br/><label>ISBN: </label>9789324199447 
<br/><br/><label>Dewey Class. No.: </label>R 371.26 RAN/I