Environmental Index :  Newspaper Articles on Environment /  English 
Central Environmental Authority. 
 - Colombo:  Central Environmental Authority,  1998 
 - ii, 52p.:  30cm. 
<br/><br/> Sinhala Version. 
<br/><br/><label>Dewey Class. No.: </label>X551.588(046)"94-95"  / NAT