Ahmad, T.; Khan, R.; Khattak, T. N.; Ullah, I.; Khan, A.; Khan, S. Comparative Efficacy of Bio-Pesticide and Synthetic Agrochemicals on Population Control of Aphids, Helicoverpa Armigera, Infestation Control and Yield of Okra: Population Control of Aphids, Helicoverpa Armigera. Pakistan Journal of Scientific & Industrial Research 2020, 63, 207-213.