Hussain, Majid <br/><br/>
Environment and Ecology Civil Services Examination 

 - 2 ed. 
 -  Access Publishing House,  2014 
 - 553p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental problems & services-- Social problems & services
<br/><br/><label>Dewey Class. No.: </label>UR574.5  / HUS-E