SUBJECT
- Sustainable development 11 canlyniadau
- Economic history 8 canlyniadau
- Environmental policy 7 canlyniadau
- Environmental aspects 5 canlyniadau
- Economic development 4 canlyniadau
- Conservation of natural resources 3 canlyniadau
- Effect of human beings on 3 canlyniadau
- Nature 3 canlyniadau
- Environmental indicators 2 canlyniadau
- Environmental protection 2 canlyniadau
- Consumption (Economics) 1 canlyniadau
- Economic forecasting 1 canlyniadau
- Economic indicators 1 canlyniadau
- Environmental impact analysis 1 canlyniadau
- Forecasting 1 canlyniadau
- Overpopulation 1 canlyniadau
- Population 1 canlyniadau
- Population forecasting 1 canlyniadau
- Social indicators 1 canlyniadau
- Social prediction 1 canlyniadau