Messenger, P.S. 1975 Parasites, predators, and population dynamics.. Insects, Science, & Society. Academic Press New York 284 pp.

Notes: [Proceedings of a Symposium on insects, Science, and Society held at Cornell University, Ithaca New York, October 14-15, 1974.] Lecanium pruinosum, (frosted scale), is mentioned as an example of an insect that became a pest only when DDT is used in pest-control programs. Natural enemy supplementation is discussed in relation to Parlatoria oleae.