Objective Questions Environment & Ecology :For Civil Services Preliminary Examination 
Objective Questions Environment Ecology For Civil Services Preliminary Examination 
 - 2nd ed.  "viii,342 p.; pbk" 
 - NewDelhi  Access Publishing India Pvt. Ltd.  2016 
<br/><br/><label>ISBN: </label>9789383454624 
<br/><br/><label>Dewey Class. No.: </label>333.7076 HUS  / 22.333.7076 HUS