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TRANSCRIPT
Citation:
Biological Control of Crop Pests. Pages 103-118. In: Dennis S Hill. 1987. Agricultural Insect Pests of Temperate Regions and their Control. Cambridge Press, Cambridge UK, 659 pages.
Keywords: natural control, cost of biological control programs, commercial availability of biocontrol agents, fortuitous biocontrol, predators, parasitoids-parasites, pathogens, fungi, bacteria, virus, protozoa, biocontrol failures