Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Inouye, M., C. Koizumi, and M. Takai. 1953. Studies on Todo-fir bark beetle Polygraphus proximus Blandford (Ipidae) [In Japanese] . Pages 103-107 in Symposium, Annual Staff Conference, Sapporo Branch, Government Forest Experiment Station 1952:27.