Subject
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Monitoring
1
National parks and reserves
1
Norway spruce
4
Pests
2
Pinaceae
1
Pine
1
Plantations
1
Pollen
1
Pollution
3
Productivity
1
Provenance trials
3
Red maple
1
Red pine
3
Red spruce
2
Reforestation
1
Research
7
Saunders, Gary L.
1
Seed orchards
16
Seedlings, Container
1
Seeds
3
Selective felling
1
Shade trees
1
Silvicultural systems
2
Site index (Forestry)
1
Sitka spruce
1
Softwoods
1
Soil fumigation
1
Soils
2
Species
1
Spruce
4
Spruce budworm
1
Sustainable forestry
5
Tamarack
2
Technological innovations
1
Timber
1
Traditional ecological knowledge
1
Transportation
1
Tree farms
2
Tree felling
1
Tree planting
1
Trees
37
Trees in cities
1
Urban landscape architecture
1
Waste products as fuel
1
Weed control
1
Wetlands
1
White pine
1
White spruce
2
Wood
1
Wood chips
1
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