Global S&T Development Trend Analysis Platform of Resources and Environment
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| 当前检索式 | ((ALL：white spruce)) |
| 限定条件 | ((语种：英语)) |
| Science X network 10 | Cary Institute of Ec 2 | Critical Zone Explor 2 |
| Environment & Energy 2 | United States Depart 2 | EurekAlert 1 |
| Science Daily 1 | US National Scientif 1 |
