Ezzat, Y.M. 1957 Biological studies on the olive scale, Parlatoria oleae (Colvee) (Hemiptera-Homoptera: Coccoidea-Diaspididae).. Bulletin de la Société Entomologique d'Egypte 41: 351-363.
Notes: Studies conducted in Maryland, U.S.A.
Ezzat, Y.M. 1957 Biological studies on the olive scale, Parlatoria oleae (Colvee) (Hemiptera-Homoptera: Coccoidea-Diaspididae).. Bulletin de la Société Entomologique d'Egypte 41: 351-363.
Notes: Studies conducted in Maryland, U.S.A.