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United States Department of Agriculture


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https://www.fs.usda.gov/treesearch/content/pdf?name=Attraction%20of%20Pissodes%20affinis%20and%20P.%20fasciatus%20(Coleoptera:%20Curculionidae)%20to%20pityol%20and%20a-pinene%20in%20a%20Coastal%20Stand%20of%20Western%20White%20Pine%20and%20Douglas-fir