Salem, S.A., & Saleh, M.R. 1992 Ecological studies on some scale insects infesting citrus trees in El-Mollake region, Sharkeia Governorate.. Bulletin of the Entomological Society of Egypt 70(1991): 209-216.

Keywords:

ecology

Notes: Discusses Lepidosaphes beckii, Aonidiella aurantii and Icerya purchasi.