history of old outbreaks
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Natural-control factors affecting the spruce budworm
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[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]Marketing guide for spruce fir and spruce budworm damaged timber (1977)
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[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]Outbreaks of the western spruce budworm in the American northern rocky mountain area from 1922-1971
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[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]Mortality of overstory trembling aspen in relation to outbreaks of the forest tent caterpillar and spruce budworm
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[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]A spruce budworm risk rating for the spruce fir types in the lake states
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[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]Cultural Practices and Forest Insects (1934)
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[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]Getting off the treadmill: Some public concerns about our spruce budworm program (1978)
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[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]Animal damage to young spruce and fir in Maine
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[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]Forest insect survey instructions to wardens (1943)
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