Yadav, P R <br/><br/>
Environmental ecology 

 - New Delhi  Discovery Publishing  2004 
 - 356p: ill.  
<br/><br/><label>ISBN: </label>81-7141-753-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic ecosystems<br/>Ecological factors<br/>Ecological niches<br/>Energy cycle -- Ecosystem<br/>Environmental ecology -- Ecology<br/>Environmental engineering<br/>Nutrient cycles -- Ecosystem<br/>Population ecology<br/>Terrestrial ecosystems