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Terms for subject Ecology containing index series | all forms | exact matches only | in specified order only
| English | Chinese |
| index series of environmental protection | 环境保护指标体系 |
| index series of environment-economic system | 环境经济系统指标体系 |
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| English | Chinese |
| index series of environmental protection | 环境保护指标体系 |
| index series of environment-economic system | 环境经济系统指标体系 |