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• Craig Stephenson在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.資料集中新增了metadata.json資源 超過 6 年之前

• Craig Stephenson在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.資料集中新增了網站資源 超過 6 年之前

• Craig Stephenson建立了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.資料集 超過 6 年之前