Subject
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Poplar
1
Population
1
Populations
1
Preparation of
1
Prevention and control
2
Pulp and Paper industry
1
Pulpwood industry
1
Pyrethroids
1
Quality
1
Reforestation
2
Regeneration
1
Research
3
Reservations
1
Residues
1
Rivers
1
Root rot
1
Seedlings
1
Seeds
3
Silviculture
1
Social aspects
1
Softwood
1
Spruce
2
Spruce budworm
4
Stand establishment
1
Statistics
7
Supply and demand
1
Symposia
1
Taiga ecology
1
Technology
1
Testing
2
Toxicology
1
Tree planting
1
Trees
15
Vegetation types
1
Waste products as fuel
1
Weather
1
Western spruce budworm
1
White pine
1
White spruce
1
Wildfires
1
Wood
2
Wood chips
1
Wood fuels
1
Wood industries
1
Wood products
1
Wood-pulp industry
1
insects
1