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conservation (1) |
ecological system (4) |
ecology (3) |
economic growth (2) |
economic policy (3) |
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economy (3) |
environment (4) |
environmental policy (3) |
equilibrium (1) |
conservation (1) |
ecological system (4) |
ecology (3) |
economic growth (2) |
economic policy (3) |
economic system (3) |
economy (3) |
environment (4) |
environmental policy (3) |
equilibrium (1) |