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- ESRI452
- Environmental Systems Research Institute (Redlands, Calif.)79
- Economic and Social Research Institute (Reston, Va.)35
- Tele Atlas North America, Inc.30
- AND International Publishers N.V.26
- Economic and Social Research Institute22
- United States Geological Survey18
- Tele Atlas (Firm : U.S.)16
- Sistemas de Información Geográfica, S.A. de C.V.11
- AND International Publishers N.V. (AND Products B.V.)9
- National Atlas of the United States and the United States Geological Survey9
- DeLorme Publishing Company, Inc.8
- DMTI Spatial Inc.5
- Michael Bauer Research GmbH4
- World Wildlife Fund4
- United States. National Aeronautics and Space Administration3
- Smithsonian Institution, Global Volcanism Program, National Atlas of the United States, and the United States Geological Survey2
- United States. National Geospatial-Intelligence Agency2
- Bureau of Transportation Statistics1
- Department of Commerce, Census Bureau, Geography Division1