Holsten, E. H., and R. L. Wolfe. 1979. Spruce beetle risk rating system for white spruce on the Kenai Peninsula. United States Department of Agriculture, Forest Service, Alaska Region, State and Private Forestry, Alaska Region, Technical Report R-10-1. 21 p.
Holsten & Wolfe 1979
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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