Subject
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Methodology
3
Mining
3
Reclamation
3
Regeneration
3
Remote sensing
3
Rock mechanics
3
Rocks
3
Sediments
3
Silviculture
3
Site index (Forestry)
3
Slope stability
3
Soil compaction
3
Soil remediation
3
Soil sampling
3
Soil scarification
3
Strip mining
3
Testing
3
Acid
2
Acid pollution of rivers, lakes, etc
2
Acid rain
2
Biology
2
Biotic communities
2
Canada
2
Chemistry
2
Children
2
Clearcutting
2
Coal mining
2
Conservation
2
Conservation biology
2
Conservation of natural resources
2
Crops
2
Deficiency diseases in plants
2
Deformation
2
Deposition
2
Ecological regions
2
Ecological risk assessment
2
Environmental policy
2
Equipment and supplies
2
Erosion
2
Fire ecology
2
Fires
2
Fixation
2
Fluvial environment
2
Forest damage
2
Forest mapping
2
Forest operations
2
Forest plants
2
Forest products
2
Forest regeneration
2
Forest roads
2
more ...