Subject
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Tidal power plants
34
Water management
34
Coastal areas
33
Environmental geology
33
Forest lands
33
Global warming
33
Mining industry
33
Petroleum industry
33
Sawmills
33
Underground storage
33
Aggregate
32
Annual report
32
Conservation of natural resources
32
Economic analysis
32
Forest damage
32
Waste disposal
32
Bibliography
31
Design
31
Economic impact
31
Sedimentology
31
Sulfides
31
Surveys
31
Transportation
31
Aerial spraying and dusting in forestry
30
Carboniferous
30
Climatic changes
30
Cost
30
Finance
30
Genesis
30
Granites
30
National parks and reserves
30
Safety measures
30
Shorelines
30
Acid mine drainage
29
Congresses
29
Energy consumption
29
Fishing
29
Habitat
29
Land tenure
29
Metamorphic rocks
29
Mineralization
29
Mining operations
29
Pine
29
Recreation areas
29
Red spruce
29
Roads
29
Strategic planning
29
White pine
29
Coal gasification
28
Coal industry
28
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