Environment 

 - 9th Revised 
 - Chennai  Shankar IAS Academy Book Publications  2021 
 - lvi, 448p.  | Binding - Paperback |  24.4*18.2 cm 
<br/><br/><label>ISBN: </label>9788193422601 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NON TECHNICAL BOOKS (NTB)
<br/><br/><label>Dewey Class. No.: </label>577  / SHA