Histopathological effects of some botanical extracts on the cotton leafworm Spodoptera littoralis ( Boisd ) Lepidoptera: Noctuidae ) . 1- Effects on the ovary and the testis. By: M.W.F. Younes, Abul-Dahab, F. A.A. Assar and M.M. Hanna. Dept. of Zoology, Faculty of Science , Monoufia Univ., Shebin El-Kom , Egypt. Dept. of Entomology , Faculty of science , Benha Branch, Zagazig Univ. Published in : The second scientific Conference on the Role of science in the development of Egyptian Society and Environment , 13-24 Oct. pp.112-129 (1999).