Perera, N. P. <br/><br/>
The human influences on the natural vegetation of the Sri Lanka highlands 

 -  19? 
 - 16p. 
<br/><br/> Off print - Vidyodaya Journal of Arts, Science, Letters Vol.5, Nos. 1&2, 1972-76, pp.13-28 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMICS
<br/><br/><label>Dewey Class. No.: </label>333.7  / P26