已选(0)清除
条数/页: 排序方式: |
| Increased extinction in the emergence of novel ecological communities 期刊论文 Science, 2020 作者: John M. Pandolfi; Timothy L. Staples; Wolfgang Kiessling
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:10/0  |  提交时间:2020/10/12 |
| Disproportionate extinction of South American mammals when Americas collided evident today 新闻 来源平台:EurekAlert. 发布日期:2020 作者: admin
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:4/0  |  提交时间:2020/10/12 |
| Will the 2020 census numbers be good enough, and how soon will we know? 新闻 来源平台:Science. 发布日期:2020 作者: admin
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:0/0  |  提交时间:2020/08/28 |
| The Emigration Life Cycle: How Development Shapes Emigration from Poor Countries 新闻 来源平台:Canadian Institute of Mining, Metallurgy and Petroleum. 发布日期:2020 作者: admin
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:1/0  |  提交时间:2020/08/24 |
| Migration from Developing Countries: Selection, Income Elasticity, and Simpson’s Paradox 新闻 来源平台:Canadian Institute of Mining, Metallurgy and Petroleum. 发布日期:2020 作者: admin
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:2/0  |  提交时间:2020/08/24 |
| Migration from Developing Countries: Selection, Income Elasticity, and Simpson’s Paradox 科技报告 来源:Center for Global Development. 出版年: 2020 作者: Michael Clemens; Mariapia Mendola
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:0/0  |  提交时间:2020/08/25 |
| The Emigration Life Cycle: How Development Shapes Emigration from Poor Countries 科技报告 来源:Center for Global Development. 出版年: 2020 作者: Michael Clemens
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:0/0  |  提交时间:2020/08/25 |
| Has Congress Captured Russia Policy? 新闻 来源平台:RAND Corporation. 发布日期:2020 作者: admin
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:20/0  |  提交时间:2020/08/19 |
| The Philippines, the US, and a century of military alliance 新闻 来源平台:Massachusetts Institute of Technology. 发布日期:2020 作者: admin
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:29/0  |  提交时间:2020/08/24 |
| Large rockfish leave Chesapeake Bay to become ocean migrators; smaller fish remain 新闻 来源平台:EurekAlert. 发布日期:2020 作者: admin
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:7/0  |  提交时间:2020/05/15 |