Kumari, Meena. 2020. “Biology and Feeding Potential Episyrphus Balteatus De Geer (Diptera: Syrphidae) on Green Apple Aphid Aphis Pomi De Geer (order Hemiptera: Aphididae) in Hills of Shimla, (H.P.), India”. Environment Conservation Journal 21 (1&2):147-50. https://doi.org/10.36953/ECJ.2020.211218.