Kumari, M. 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 (Jun. 2020), 147–150. DOI:https://doi.org/10.36953/ECJ.2020.211218.