Science Bulletins - (Vidurava)
Permanent URI for this communityhttps://dl.nsf.gov.lk/handle/1/45
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Item 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.Item Use of chemicals for plant protection(Natinal Resources, Energy Science Authority of Sri Lanka:Colombo, 1991) Wickramasinghe, R.H.Item Global warming, physiology, health and food supplies(NARESA:Colombo, 1993) Wickramasinghe, R.H.