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You searched for: Author Geological Survey (U.S.) Remove constraint Author: Geological Survey (U.S.) Place United States. Virgin Islands Remove constraint Place: United States. Virgin Islands Year 1980 Remove constraint Year: 1980
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1. County Boundaries of the United States, 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.).