AWASTHI, C. J. “INCIDENCE OF MUSTARD APHID (LIPAPHIS ERYSIMI KALT.) IN ARID ZONE”. UTTAR PRADESH JOURNAL OF ZOOLOGY, vol. 13, no. 1, Jan. 1993, pp. 31-32, https://www.mbimph.com/index.php/UPJOZ/article/view/1138.