Perera, Sunil Sarath <br/><br/>
පරිසරය සහ සන්නිවෙිදනය 
 Parisaraya saha sannivedanaya 

 - Battaramulla  Ministry of froest and environment   1999 
 - 144p.,  22 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Global village <br/>Biological diversity <br/>Communication
<br/><br/><label>Universal Decimal Class. No.: </label>591.5  / PER