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：carbon isotope ratio)) |
| 限定条件 | 无 |
| Science X network 25 | EurekAlert 17 | Science Daily 16 |
| EurekAlert! 8 | EurekAlert! - Earth 4 | Japan Agency for Mar 3 |
| Centre national de l 1 | NewScientist 1 | Science 1 |
