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| protection of biological resources | |||
| conservation of living resources | |||
| protection of biologic resources; protection of biotic resources | |||
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生物资 源 保护 : 10 phrases in 6 subjects |
| China | 1 |
| Earth sciences | 1 |
| Ecology | 2 |
| Name of organization | 1 |
| Oceanography & oceanology | 2 |
| Technology | 3 |
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