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- ecological 1
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- ecological and economic efficiency 1
- ecological aspect 1
- ecological construction 1
- ecological development 1
- ecological efficiency 2
- ecological factors 1
- ecological imperative 1
- ecological index 2
- ecological marketing 1
- ecological modernization 2
- ecological production 2
- ecological safety 1
- ecological situation of the environment 1
- ecological technologies 2
- ecological value 1
- ecological-economic theory 1
- ecologicality 1