1999. Geological Survey (U.S.) and Environmental Systems Research Institute (Redlands, Calif.). U.S. National Atlas Airports represents airports in the United States, Puerto Rico, and U.S. Virgin Islands with airport passenger enplanements of ... Environmental Systems Research Institute, Inc. (ESRI).
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1997. Bureau of Transportation Statistics, Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). U.S. National Transportation Atlas Highways represents rural interstates and arteries; and urban freeways, expressways, interstates, arteries and c... Environmental Systems Research Institute, Inc. (ESRI).
2000. Environmental Systems Research Institute, Inc. (ESRI) and Harvard Geospatial Library. World Time Zones represents the time zones of the world. The time zones are best displayed with World Countries or World Administrative Units. Environmental Systems Research Institute, Inc. (ESRI).