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ප්‍රවර්තනීය සංවර්ධනය සඳහා කාලගුණ විද්‍යාව සහ ජල විද්‍යාව

Mohottala, A.W. (Ministry of Environment and Parliamentary Affairs:Colombo, 1992)
පරිසරය හා සෞඛ්‍යය

Fonseka, C. (Ministry of Environment and Parliamentary Affairs:Colombo, 1992)
දිවිලත් ගව පොව්වා

Anthonis, L. (Ministry of Environment and Parliamentary Affairs:Colombo, 1992)
කසල ගොඩෙන් ජීව වායුව

Unknown author (Ministry of Environment and Parliamentary Affairs:Colombo, 1992)
මිහිතලයේ ගීතය

Nakkavita, V. (Ministry of Environment and Parliamentary Affairs:Colombo, 1993)
Some customs and traditions of the veddahs

Punchihewa, G.G. (Ministry of Environment and Parliamentary Affairs:Colombo, 1993)
වැදි ජනතාවගේ ගුහා සිත්තම්

Punchihewa, G. De S. A. (Ministry of Environment and Parliamentary Affairs:Colombo, 1993)
Environment and development

Fernando, N. (Ministry of Environment and Parliamentary Affairs:Colombo, 1990)
Poverty, environment and janasaviya

Tissakuttiarachchi, G. (Ministry of Environment and Parliamentary Affairs:Colombo, 1990)
Worshipping the lords of the jungle

Dissanayake, J.B. (Ministry of Environment and Parliamentary Affairs:Colombo, 1990)