You searched for: Author Geological Survey (U.S.) Remove constraint Author: Geological Survey (U.S.) Institution Stanford Remove constraint Institution: Stanford Place Massachusetts Remove constraint Place: Massachusetts Place Alabama Remove constraint Place: Alabama Place Arizona Remove constraint Place: Arizona Place Delaware Remove constraint Place: Delaware Data type Polygon Remove constraint Data type: Polygon Year 1980 Remove constraint Year: 1980
1980. Geological Survey (U.S.). This polygon shapefile contains the 1980 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).