Koizumi, C., H. Yamaguchi, and Y. Akita. 1971. Tree mortality and infestation of the larch eightspined engraver, Ips cembrae Heer, in larch plantations in eastern Hokkaido [In Japanese, English symmary] . Hokkaido Forest Experiment Station, Annual Report 1970:140-146.
Koizumi et al. 1971
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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