Subject
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Acid rain
1
Acid soils
1
Acidification
1
Aerial photography in soil surveys
1
Agricultural chemical content
1
Agriculture
1
Air quality
1
Animals
1
Beaches
1
Biomass
1
Biotic communities
1
Blueberries
1
Books
1
Boreal forests
1
Canadian Soil Information System
1
Carbon
1
Chemical composition
1
Coal mines
1
Colour
1
Combustion
1
Communities
1
Competition
1
Composition
1
Continental margin
1
Crops
1
Crust
1
Data processing
1
Deep sea environment
1
Deficiency diseases in plants
1
Deformation
1
Density
1
Diagnosis
1
Drift
1
Ecological balance
1
Ecological risk assessment
1
Economics
1
Ecoregions
1
Ectomycorrhizas
1
Effects
1
Emission spectroscopy
1
Environment
1
Environmental conditions
1
Environmental geology
1
Environmental impact statements
1
Equipment
1
Equipment and supplies
1
Fertilizers
1
Fir
1
Fire behavior
1
Fire ecology
1
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