GIS Dictionary
Definitions for GIS terms related to operations such as analysis, GIS modeling and web-based GIS, cartography, and Esri software.
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GIS Bibliography
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ArcGIS Online
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[ESRI software]
A Web-based system for sharing, finding, and using maps, layers, and services. ArcGIS Online includes a set of base maps, map layers, and tools published by ESRI for use inside ArcGIS products.