Subject
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Pine
3
Plants
3
Toxicology
3
Wildlife
3
Butterflies
2
Canker-worms
2
Cedar
2
Christmas tree growing
2
Cones (Botany)
2
Crown land
2
Defoliation
2
Dispersal
2
Eastern redcedar
2
Ecology
2
Ecosystems
2
Education
2
Fall cankerworm
2
Fir
2
Fish
2
Forest fires
2
Forest resources
2
Guidebooks
2
History
2
Host plants
2
Invasive species
2
Junipers
2
Larches
2
Larvae
2
Manuals
2
Minerals
2
Periodicals
2
Research
2
Seed orchards
2
Seeds
2
Symposia
2
Tamarack
2
Teaching materials
2
Thuja occidentalis
2
Timber
2
Acid rain
1
American Dog Tick
1
Amphibians
1
Animals
1
Anthocoridae
1
Aphids
1
Aquatic Environment
1
Arbres
1
Aspen
1
Balsam woolly adelgid
1
Behaviour
1
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