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Canada
Canadian Arctic
North of 60
4
Northern Canada
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Yukon Territory
4
Alaska
2
Botany
2
Bryophyta
2
Damage to
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Diseases
2
Diseases of
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Environmental
2
Environmental impacts
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Flora
2
Forest resources
2
Forestry
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Forests
2
Fossils
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Observations by
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Palaeontology
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Pipelines
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Plants
2
Pollution
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Remote Sensing
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Terrain Disturbance
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Trees
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Vegetation
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silviculture
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Arctic Institute of North America
1
History
1
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