UPADHYAY, S, and R C MISHRA. 2013. “Efficacy and Economics of Insecticides and Neem (Azadirachta Indica)-Based Products on Incidence of Aphid (Aphis Gossypii) on Isabgol (Plantago ovata)*”. The Indian Journal of Agricultural Sciences 69 (2). https://epubs.icar.org.in/index.php/IJAgS/article/view/26365.