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keyword: pest insects – 4 free books.
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Review of Invertebrate Biological Control Agents Introduced into Europe
Urs Schaffner and Esther Gerber
Proceedings of the 5th International Symposium on Biological Control of Arthropods
Charles Vincent et al.
Review of Invertebrate Biological Control Agents Introduced Into Europe
Esther Gerber and Urs Schaffner
Proceedings of the 5th International Symposium on Biological Control of Arthropods
Charles Vincent et al.