Christiansen, E., and K. J. Huse. 1980. Infestation ability of Ips typographus in Norway spruce, in relation to butt rot, tree vitality, and increment . Meddelelser fra det Norsk Institutt for Skogforskning 35:467-482.
Christiansen & Huse 1980
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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