Samways, M.J. 1981a . Biological Control of Pests and Weeds (Studies in Biology, The Institute of Biology, no. 132). Edward Arnold London 58 pp.

Notes: This book emphasizes that biological control can be appropriately harmonized in a pest management program, and provides a framework for the non specialist. Rodolia cardinalis is mentioned in its role as biological control agent for Icerya purchasi. Aphytis melinus is mentioned as a biological control agent for Aonidiella aurantii. The Gascardia destructor outbreak on citrus in southern Africa is also discussed. Phenacoccus manihoti, a cassava pest, is mentioned as occurring in Zaire, the Congo and Brazil. Other species mentioned include Planococcus citri, Coccus aethiopicus and Cornuaspis beckii.