Tiwari, S.C. <br/><br/>
Concepts of modern ecology 
/ by S.C. Tiwari 
 - 2nd ed. 
 - Dehradun:   Bishen Singh Mahendrapal Singh,   2005. 
 - xii, 663p. 
<br/><br/><label>ISBN: </label>8121101395 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Ecosystems<br/>Environment<br/>Life science
<br/><br/><label>Dewey Class. No.: </label>577  / TIW/C