Perera <br/><br/>
the crds special publication  - 
Perera.A.L.S 
 - 1995 
 - Sri lanka  Sri lanka  1995 
 - 138  - 
<br/><br/> - 
<br/><br/><label>ISBN: </label>
<br/><br/><label>ISSN: </label>
<br/><br/><label>Dewey Class. No.: </label>352.1  / PER