Paranagama, P.A.Kodikara, K.A.B.C.H.Nishantha, H.M.I.Mubarak, A.M.2010-07-062010-07-062001Journal of the National Science Foundation, 29(1 and 2):p.69-79https://dl.nsf.gov.lk/handle/1/6746Neem seedsAntifeedant activityInsecticidesAzadirachta indicaPeriplaneta americanaInvertaseProteaseChemistryEffect of azadirachtin on growth and the activity of midgut enzymes of the cockroach periplaneta americanaArticle