Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Lieutier, F. 1979a. Les Dipteres associes a Ips typographus et Ips sexdentatus (Coleoptera: Scolytidae) en region Parisienne, et les variations de leurs populations au cours du cycle annuel . Bulletin d'Ecologie 10:1-13.
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