hemlock looper
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spruce budworm
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balsam fir
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british columbia
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control
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diseases and pests
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douglas fir tussock moth
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2
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insect pests
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aerial spraying
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aerial spraying and dusting in forestry
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arpenteuse de la pruche
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arpenteuse de la pruche bibliographie
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bacillus thuringiensis
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biological control
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biology
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black spruce
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douglas fir
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douglas-fir tussock moth
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douglas-fir tussock moth control
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experimental spray
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fir
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forest insect pests
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forest insects
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forest management
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forest tent caterpillar
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hemlock looper bibliography
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