Subject
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White spruce
6
Wildlife management
6
Archaeology
5
Development
5
Evaluation
5
Fisheries
5
Forest machinery
5
Forest products industry
5
Forest soils
5
Forestry engineering
5
Mining
5
Propagation
5
Public opinion
5
Resource management
5
Travel
5
Wildlife
5
Bibliography
4
Biomass
4
Christmas trees
4
Coal utilization
4
Cogeneration
4
Control
4
Current Research
4
Ecological disturbances
4
Economic aspects
4
Forest fires
4
Forest industry
4
Habitats
4
Land use
4
Methodology
4
Pollution
4
Safety
4
Spruce
4
Transportation
4
Woodlots
4
Acid rain
3
Agriculture
3
Analysis
3
Bioenergy
3
Biology
3
Biomass energy
3
Birds
3
Christmas tree growing
3
Coal Mines
3
Combustion
3
Demographics
3
Ecosystems
3
Energy
3
Environmental impacts
3
Environmental policy
3
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