Subject
ecology
environmental protection
4
economic aspect
3
economy
3
environmental economy
3
sustainable development
3
economic analysis
2
environmental balance
2
business economics
1
cost benefit analysis
1
economic growth
1
economic policy
1
ecosystem
1
energy environment balance
1
environment
1
environmental impact
1
environmental policy
1
environmental pollution
1
environmental quality
1
environmental research
1
extinction
1
greenhouse effect
1
innovation
1
life cycle assessment
1
management
1
nature conservation
1
production function
1
sustainability
1