Pettersen, H., and O. Austara. 1975. Overvintringsforhold hos stor granbarkbille, Ips typographus L. (Col., Scolytidae) [Overwintering conditions for Ips typographus L. ]. Norsk Institutt for Skogforskning, Meddelelser 31(11):572-580.
Pettersen & Austara 1975
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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