YADAV, RAJBIR, S S MEENA, G P SINGH, and D K YADAV. 2011. “Host-Insect Interaction in Brassica Against Turnip Aphid (Lipaphis Erysimi)”. The Indian Journal of Agricultural Sciences 78 (2). https://epubs.icar.org.in/index.php/IJAgS/article/view/2659.