Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Francke, W., M. L. Pan, J. Bartels, W. A. Konig, J. P. Vite, S. Krawielitzki, and U. Kohnle. 1986. The odour bouquet of three pine engraver beetles (Ips spp) . Journal of Applied Entomology 101:453-461.
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