Harding, S., E. B. Lapis, and B. Bejer-Petersen. 1986. Observations on the activity and development of Pityogenes chalcographus L. (Col., Scolytidae) in stands of Norway spruce in Denmark. Journal of Applied Entomology 102: 237-244.
Harding et al. 1986
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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