Chitkara,M.G, <br/><br/>
Environmental protection and sustainable development 
By M.G.Chitkara 
 - New Delhi:  APH Publishing Corporation.,  2015 
 - xi;425p. 
<br/><br/><label>ISBN: </label>978-81-313-1456-2 
<br/><br/><label>Dewey Class. No.: </label>JB  / Q5