Williams, C., D. Azuma, and G. Ferrell. 1992. Incidence and effects of endemic populations of forest pests in young mixed-conifer forests of the Sierra Nevada. United States Department of Agriculture, Forest Service, Pacific Southwest Research Station (Berkeley, CA), Research Paper PSW-RP-212.
Williams et al. 1992
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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