Vasishta, P.C. <br/><br/>
A Text Book of Plant Ecology 

 - Jalandhar  Vishal Publications   1994 
 - 284 
<br/><br/><label>Publisher. No.: </label> Gangaram Book Bureau 
<br/><br/><label>Subjects--Personal Names: </label> Environmental Science 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science