Singh, J.S. Singh, S.P. Gupta, S.R. <br/><br/>
Ecology environment and resource conservation 

 - new dehil  anamaya  2006 
 - xxvii,688p.;ill  pbk 
<br/><br/><label>ISBN: </label>8188342556 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Resource conservatrion
<br/><br/><label>LC Class. No.: </label>QH183.S5 2006