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The role of online platforms in weathering the COVID-19 shock 科技报告
来源:OECD iLibrary. 出版年: 2021
作者:  OECD
收藏  |  浏览/下载:28/0  |  提交时间:2021/01/15
A deposit model for carbonatite and peralkaline intrusion-related rare earth element deposits: Chapter J in Mineral deposit models for resource assessment 科技报告
来源:US Geological Survey (USGS). 出版年: 2014
作者:  Verplanck, Philip L. plv@usgs.gov;  Van Gosen, Bradley S. bvangose@usgs.gov;  Seal, Robert R., II rseal@usgs.gov;  McCafferty, Anne E. anne@usgs.gov
收藏  |  浏览/下载:47/0  |  提交时间:2019/04/05
Nickel-cobalt laterites: a deposit model: Chapter H in Mineral deposit models for resource assessment 科技报告
来源:US Geological Survey (USGS). 出版年: 2013
作者:  Marsh, Erin emarsh@usgs.gov;  Anderson, Eric J.;  Gray, Floyd fgray@usgs.gov
收藏  |  浏览/下载:9/0  |  提交时间:2019/04/05