You searched for: Place Alaska Remove constraint Place: Alaska Place Delaware Remove constraint Place: Delaware Format Shapefile Remove constraint Format: Shapefile Year 1990 Remove constraint Year: 1990 Bounding Box 50.273438 19.12441 59.589844 28.748397 Remove constraint Bounding Box: 50.273438 19.12441 59.589844 28.748397
1990. Geological Survey (U.S.). This polygon shapefile portrays the 1990 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).
1990. United States. Agricultural Research Service. This polygon shapefile portrays the spread, by year, of the Africanized honey bee (AHB) in the United States, Puerto Rico, and the U.S. Virgin Isla... National Atlas of the United States.