Michelbacher, A.E. 1962 Influence of natural factors on insect and spider mite populations.. [Proceedings. XI International Congress of Entomology.] Verhandlungen. XI Internationaler Kongress für Entomologie. 893 pp.

Notes: [Conference held in Wien, 17 to 25 August 1960.] Aonidiella aurantii, Icerya purchasi, Lecanium cerasorum, L. corni, L. pruinosum and Icerya purchasi are among the species that are discussed in this paper.