Verma, P.S. and Agarwal, V.K. <br/><br/>
Environmental Biology 
(Principles of Ecology) 
 - New Delhi  S. Chand & Company Ltd  1983 
 - 591 
<br/><br/> 006608 
<br/><br/><label>Publisher. No.: </label> Banglore Book Bureau 
<br/><br/><label>Subjects--Personal Names: </label> MSc Botany 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MSc Botany