Wickramananda, I.R.2014-06-032014-06-031998Tropical Agricultural Research , 10:p.282-290https://dl-cri.nsf.gov.lk//handle/1/3663Pests and Pest ControlBiopesticidesNeem extractsInsecticidesInsecticidal activities of leaf extracts of neem (Azadirachtaindica A Juss)