Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Baker, B. H., and D. J. Curtis. 1973. Alaska (R-10). Pages 5-8 in D. P. Graham and J. F. Chansler, Forest insect and disease conditions in the United States, 1972. United States Department of Agriculture, Forest Service. vi + 72 p.