Subject
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Mathematical models
1
Old growth forest conservation
1
Old growth forests
1
Plant hybridization
1
Quality
1
Red maple
1
Red spruce decline
1
Seed orchards
1
Silvicultural systems
1
Sugar maple
1
Sustainable forestry
1
Tamarack
1
Urea as fertilizer
1
White birch
1
Windfall (Forestry)
1
Wood
1