Perera, N.R. <br/><br/>
Natural resources settlements and land used 

 -  Dr.W. Junk  1984 
 - 40p.,  23 cm 
<br/><br/> Article from ecology and biogeography in Sri lanka Fernando, C.H. ed. 
<br/><br/><label>Universal Decimal Class. No.: </label>591.5  / PER