Subject
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Coal industry
2
Coal mines and mining
1
Coal preparation
1
Coast changes
1
Coastal areas
1
Coastal ecology
1
Coastal zone management
1
Coastlines
2
Cohasset
1
Collection and preservation
1
Colorado spruce
1
Combustion
1
Commonwealth countries
1
Communities
1
Competition
1
Computer programs
1
Cones (Botany)
1
Congresses
7
Conifers
7
Conservation
22
Conservation areas
1
Conservation biology
1
Conservation of natural resources
2
Control
17
Conversion tables
2
Cost
2
Costs
1
Cougars
1
Coyote
2
Coyotes
2
Crop rotation
1
Crown land
11
Crown lands
33
Cutover lands
2
Darwin, Charles, 1809-1882
1
Data
1
Data processing
1
Databases
1
Decision-making
1
Deer
3
Deer hunting
1
Deer populations
1
Defoliation
2
Demographics
2
Design
2
Design and construction
4
Desulferization
1
Development
3
Dictionaries
1
Dieback
1
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