Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Kohnle, U., J. P. Vite, C. Erbacher, J. Bartels, and W. Francke. 1988. Aggregation response of European engraver beetles of the genus Ips mediated by terpenoid pheromones . Entomologia Experimentalis et Applicata 49:43-54.
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