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Publisher
- United States. National Imagery and Mapping Agency139
- U.S. National Imagery and Mapping Agency (NIMA)82
- MassGIS (Office : Mass.)60
- Cambridge (MA) Geographic Information System (City of Cambridge GIS)55
- Environmental Systems Research Institute (Redlands, Calif.)30
- Latin Force LLC29
- Platts28
- Cape Town (South Africa) Strategic Development Information and GIS Department (CCT) 16
- Southern Africa Humanitarian Information Management System (SAHIMS)14
- Tobin12
- ESRI10
- Tele Atlas North America, Inc./Geographic Data Technology, Inc.10
- MassGIS9
- Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)8
- Cambridge (Mass.). Geographic Information Systems7
- DMTI Spatial Inc.7
- United States Geological Survey7
- Cambridge (Mass.) Geographic Information Systems6
- Environmental Systems Research Institute (ESRI)6
- Somerville (MA) Geographic Information System (City of Somerville GIS)6