Singh, J.S. <br/><br/>
Ecology environmental science and conservation 
J.S Singh, S.P. Singh, S.R. Singh 
 - 1st ed.  reprinted, 2022 
 - New Delhi:  S. Chand and Company Limited  2014 
 - xiv, 929p. 
<br/><br/><label>ISBN: </label>9789383746002 
<br/><br/><label>Dewey Class. No.: </label>G:5  / Q4