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Pests, pesticides and biological control 2. Natural enemies 3. Biological control ecology 4. Early naturalists and experiments 5. The first foreign explorers 6. Modern foreign exploration and successes 7. Maximising biological control through research 8. Utilization by the public 9. Other biological methods 10. Escape from the pesticide dilemma.
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Frank et al. (1992) studied this question.
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