Polunin Nicholas <br/><br/>
Maintenance of the biosphere  Proceeding    

 - Edinburgh  University Press Edinburgh          1990 
 - xvi,228p  cm. 
 - Foundation foe Environmental Conservation .
<br/><br/> Bibliography chapterwise 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography- Environment
<br/><br/><label>Dewey Class. No.: </label>U:(G:55)p1,N87, M0