Subject
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Endangered species
3
Environmental impacts
3
Forest conservation
3
Forest policy
3
Mammals
3
Measurement
3
Petroleum
3
Population
3
Predation (Biology)
3
Seashore biology
3
Silviculture
3
Urban ecology (Biology)
3
Wildlife conservation
3
Animals
2
Benthos
2
Bioenergy
2
Biological effects
2
Biomass conversion
2
Biotechnology
2
Birds
2
Butterflies
2
Case studies
2
Competition (Biology)
2
Data processing
2
Detection
2
Diseases
2
Diseases and pests
2
Exploration
2
Extinction
2
Fish
2
Food
2
Forest surveys
2
Forests and forestry
2
Genetics
2
Guidebooks
2
Habitat
2
Holocene
2
Landscape ecology
2
Manuals
2
Marine ecology
2
Marine environment
2
Marine geology
2
Materials handling
2
Methods
2
Monitoring
2
Natural gas
2
Nature conservation
2
Oceanography
2
Pesticides
2
Populations
2
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