Subject
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developing country
4
development
2
dissolved organic matter (DOM)
1
domestic animal
1
drinking water contamination
1
drought
6
dynamic model
1
dynamics
1
earth atmosphere
1
ecobalance
1
ecology
14
economic aspect
1
economics
4
ecophysiology
1
ecosystem
17
emission
1
energy crop
3
energy production
1
energy resource
2
energy source
1
energy storage
1
environment
3
environmental balance
3
environmental biology
1
environmental compatibility
2
environmental effect
3
environmental impact
2
environmental impact assessment
4
environmental law
2
environmental monitoring
1
environmental policy
2
environmental pollution
2
environmental program
1
environmental protection
4
environmental sample
1
erosion
4
ethical aspect
1
eutrophication
1
evaporation
2
evapotranspiration
3
evolution
3
fertilization
14
fertilizer
13
fiber
1
fishery
2
flowering plant
1
food
4
food additive
2
food analysis
1
food chain
2
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