Kumar, H. D. <br/><br/>
Modern concepts of ecology 
H. D Kumar 
 - New Delhi   Vikas Publlishing House Pvt Ltd 1986 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>LC Class. No.: </label>QH 541 .K8 1986