National environmental act, no. 47 of 1980
The Democratic Socialist Republic of Sri Lanka
National environmental act, no. 47 of 1980 - Sri Lanka, National Environmental Foundation, 1981, - 35p. 15cm.
ජාතික පාරිසරික පනත (980 අංක 47 හා 1988 අංක 56)
National environment (amendment) act, no. 56 of 1988
National environmental act, no. 47 of 1980 - Sri Lanka, National Environmental Foundation, 1981, - 35p. 15cm.
ජාතික පාරිසරික පනත (980 අංක 47 හා 1988 අංක 56)
National environment (amendment) act, no. 56 of 1988