The Democratic Socialist Republic of Sri Lanka  <br/><br/>
National environmental act, no. 47 of 1980  

 - Sri Lanka,   National Environmental Foundation,  1981, 
 - 35p.  15cm. 
<br/><br/>ජාතික පාරිසරික පනත (980 අංක 47 හා 1988 අංක 56) <br/>National environment (amendment) act, no. 56 of 1988