Garg, Santosh Kumar <br/><br/>
Environmental studies 
Santosh Kumar Garg and Ranjini Garg 
 - Rev 5th ed. 
 - Delhi  Khanna publishers  2020 
 - 390p. 
<br/><br/><label>ISBN: </label>9788194538028  199 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EVS
<br/><br/><label>Dewey Class. No.: </label>333.7  / GAR