Filip, G. M., E. Christiansen, and C. A. Parks. 1989. Secondary resin production increases with vigor of Abies grandis inoculated with Trichosporium symbioticum in northeastern Oregon. United States Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, Portland, Oregon, Research Note PNW-489. 10 p.
Filip et al. 1989
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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