Global S&T Development Trend Analysis Platform of Resources and Environment
分面浏览：作者 |
| 当前检索式 | ((ALL：Jeffrey M. Welker)) |
| 限定条件 | ((作者：Leffler, A. Joshua)) |
| Beard, Karen H. 3 | Kelsey, Katharine C. 3 | Leffler, A. Joshua 3 |
| Welker, Jeffrey M. 3 | Choi, Ryan T. 2 | Schmutz, Joel A. 2 |
