Global S&T Development Trend Analysis Platform of Resources and Environment
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| 当前检索式 | ((ALL：Willingness To Pay)) |
| 限定条件 | ((语种：英语) AND (学科/领域：地球科学)) |
| Science X network 23 | EurekAlert 16 | Australian Resources 6 |
| Canadian Institute o 6 | EurekAlert! - Earth 2 | Minging.com 1 |
