Ferrell, G. T. 1973b. Weather, logging, and tree growth associated with fir engraver attack scars in white fir. United States Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, Research Paper PSW-92. 13 p.
Ferrell 1973
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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