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：sex ratio)) |
| 限定条件 | ((发表日期：2020)) |
| EurekAlert 11 | EurekAlert! 3 | EurekAlert! - Earth 2 |
| Australian Resources 1 | Imperial College Lon 1 | Science 1 |
| Science Daily 1 | UK Environment Agenc 1 |
