Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Lawson, S., K. Furuta, and K. Katagiri. 1997. Effect of natural enemy exclusion on mortality of Ips typographus japonicus Niijima (Col, Scolytidae) in Hokkaido, Japan . Journal of Applied Entomology 121:89-98.
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