活动流

• Craig Stephenson增加了资源metadata.json 到数据集The use of Global Positioning System units and ArcGIS Online to engage K-12 Students in Research Being Done in their Local Communities (Poster). American Geophysical Union Fall Meeting. San Francisco, California, USA. 5年前

• Craig Stephenson增加了资源网站 到数据集The use of Global Positioning System units and ArcGIS Online to engage K-12 Students in Research Being Done in their Local Communities (Poster). American Geophysical Union Fall Meeting. San Francisco, California, USA. 5年前

• Craig Stephenson 建立了数据集The use of Global Positioning System units and ArcGIS Online to engage K-12 Students in Research Being Done in their Local Communities (Poster). American Geophysical Union Fall Meeting. San Francisco, California, USA. 5年前