“Efficacy of Bio-Insecticides and Synthetic Insecticides on the Control of Helicoverpa Armigera Insect on Tomato Crop: Helicoverpa Armigera Insect on Tomato Crop”. Biological Sciences - PJSIR, vol. 63, no. 1, Mar. 2020, pp. 17-21, https://doi.org/10.52763/PJSIR.BIOL.SCI.63.1.2020.17.21.