Science Bulletins - (Vidurava)

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Bee keeping and its management on coconut, rubber, cashew, citrus, gingelly, fruit, timber and other plantations
(Natinal Resources, Energy Science Authority of Sri Lanka:Colombo, 1991) Wickramasinghe, R.H.
Contemporary wars and the environment
(NARESA:Colombo, 1994) Wickramasinghe, R.H.
Cyclones storm surges and the environment
(NARESA:Colombo, 1993) Wickramasinghe, R.H.
Some possible uses of water hyacinth
(Natural Recources Energy Science Authority:Colombo, 1992) Wickramasinghe, R.H.
Use of chemicals for plant protection
(Natinal Resources, Energy Science Authority of Sri Lanka:Colombo, 1991) Wickramasinghe, R.H.
Pollution in Sri Lanka
(NARESA:Colombo, 1990) Wickramasinghe, R.H.
Global warming, physiology, health and food supplies
(NARESA:Colombo, 1993) Wickramasinghe, R.H.
Sea turtles of Sri Lankan waters
(Natinal Resources, Energy Science Authority of Sri Lanka:Colombo, 1991) Wickramasinghe, R.H.