Global S&T Development Trend Analysis Platform of Resources and Environment
分面浏览：来源平台 |
| 当前检索式 | ((ALL：Persistence barrier)) |
| 限定条件 | 无 |
| Science X network 4 | EurekAlert 2 | EurekAlert! - Earth 2 |
| Centre national de l 1 | EurekAlert! 1 | RAND Corporation 1 |
| Science Daily 1 | Scripps Institution 1 | The Copernicus Progr 1 |
