Srivastava smriti <br/><br/>
Enivironmental science and ethics 

 - 2nd Edition 
 - New delhi  S.k.kataria & sons  2019 
 - 328p. 
<br/><br/><label>ISBN: </label>9.7893800274e+012 
<br/><br/><label>Dewey Class. No.: </label>350  / Sri/E