Kanagaratnam, P.Pethiyagoda, U.Velu, M.S.2014-06-302014-06-301983Cocos, v1 p:07-10https://dl-cri.nsf.gov.lk//handle/1/4071enPests and Pest ControlBiological controlOpisina arenosellaBacillus ThuringiensisEffect of four commercial preparations of Bacillus thuringiensis on opisina arenosella walkerArticle