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 Economy | |
 Environment and Energy | |
| Climate and Natural Resources | |
| Energy | |
| Environmental Management | |
| Greenhouse Gas Emissions | |
| Land Use and Management | |
| Natural Resources | |
| Sustainabilty | |
| Waste | |
| Industry | |
| Methods | |
| Population/People | |
| Research and Methodology | |
| Statistical Classifications and Standards | |
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