Subject
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Coal
8
Coal Mines
5
Coal deposits
1
Coal fields
1
Coal gasification
1
Coal mines and mining
2
Coal mining
4
Coal preparation
2
Coal resources
2
Coastal areas
1
Cogeneration
1
Cohasset
6
Coke ovens
1
Combustion
7
Commodities
1
Communities
1
Computer modeling
1
Conservation
5
Conservation of natural resources
2
Construction
3
Construction industry
1
Contamination
2
Cormorants
1
Cost
2
Dams
1
Data
1
Data acquisition
1
Databases
1
Decision-making
1
Deforestation
1
Desulferization
1
Development
2
Drilling mud
1
Ecological surveys
1
Ecology
6
Economic aspects
2
Economic development
1
Economic geology
2
Economic impact
6
Economic surveys
1
Economics
14
Ecosystems
5
Education
1
Effect of environment on
1
Effect of logging on
1
Electric generators
1
Electric power
6
Electricity
3
Emission reduction
1
Emissions
10
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