Disha <br/><br/>
Ecology &Environment compendium:  For IAS prelims General studies paper -1 & State PSC exams 
Disha Publication 
 - Second 
 - NewDelhi  Disha  2021 
<br/><br/><label>ISBN: </label>9789388373081 
<br/><br/><label>Dewey Class. No.: </label>371.26  / DIS.E