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permafrost
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Environmental sciences
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GC1-1581
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GE1-350
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Hydraulic engineering
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Ice-wedge polygon mires
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Oceanography
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TC1-978
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TD201-500
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Water supply for domestic and industrial purposes
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aquatic
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beetles
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loess
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microtopography
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modern vegetation
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paleosol
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riparian
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western Canadian Arctic
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