Lebedev, A. 1991. Oleoresin indication of the resistance of Norway spruce trees to Ips typographus bark beetles (In Russian). Izvestiya Vysshikh Uchebnykh Zavedenii, Lesnoi Zhurnal 1:18-22.
Lebedev 1991
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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