A., S., S., A., H., I. (2018). 'Ultrastructural Changes of the Cotton Leaf Worm, Spodoptera littoralis (Boisd.) Ovaries Induced by the two IGRs; Diflubenzuron and Chromafenozide.', Egyptian Academic Journal of Biological Sciences. A, Entomology, 11(3), pp. 19-34. doi: 10.21608/eajb.2018.11680