Elwan, E.A., & Assem, S.M. 2000 Seasonal abundance of the olive black scale, Saissetia oleae (Olivier.) (Homoptera-Coccidae) on olive trees in El-Arish, north Sinai, Egypt.. Bulletin of the Entomological Society of Egypt 78: 177-187.
Elwan, E.A., & Assem, S.M. 2000 Seasonal abundance of the olive black scale, Saissetia oleae (Olivier.) (Homoptera-Coccidae) on olive trees in El-Arish, north Sinai, Egypt.. Bulletin of the Entomological Society of Egypt 78: 177-187.