Disease

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Budworm infested Douglas fir (Pseudotsuga menziesii var. glauca); William W Dunmire; 1971


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Healthy & infested trees; William W Dunmire; 1971


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Slope of budworm damaged trees; William W Dunmire; 1971


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Spruce budworm infestation; Myers; 1961


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Spruce budworm infestation; Myers; 1961


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Spruce budworm - last years eating & this years growth; Photographer unknown; 1970


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Spruce budworm; Photographer unknown; 1968


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Spruce budworm; Photographer unknown; 1968


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Spruce budworm pupae case - limber pine; Myers; 1964


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Spruce budworm cocoon; Photographer unknown; 1970


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Pustules; Myers; 1962


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Larvae feeding galleries; Myers; 1962


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Boring Fras - Douglas fir beetle; Photographer unknown; 1962


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