1. Recent developments in biological and integrated control of citrus pests in South Africa.;Annecke;Proc. 1st Int. Citrus Symp. Riverside, Calif.,1969
2. A big bet on biological control.;Anonymous;Citrograph,1971
3. Data on the biological control of citrus scales in Greece.;Argyriou;Bull. SROP,1974
4. The establishment of Metaphycus helvolus (Compere) (Hymenoptera: Encyrtidae) on Saissetia oleae (Bern.) (Homoptera: Coccidae) in olive groves in Greece.;Argyriou;Entomophaga,1968
5. Der Klapperbladkever, Brontispa froggatti var. celebensis, en zijn biologische bestrijding op Celebes. (Voorloopige mededeeling).;Awibowo;Landbouw. Buitenz.,1934