Sieber, R., and G. Benz. 1985. The diapause of the birch engraver, Scolytus ratzeburg Janson (Col, Scolytidae), its termination by chilling, and manipulation with ecdysterone . Mitteilungen der Schweizerischen Entomologischen Gesellschaft 58:193-198.
Sieber & Benz 1985
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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