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STATEMAP: Surficial Geologic Maps of Nebraska - University of Nebraska …
STATEMAP | Geology - University of Nebraska–Lincoln
USGS Mineral Resources On-Line Spatial Data
Geology Related GIS Data - University of Nebraska–Lincoln
Geology of Nebraska - Wikipedia
Data & Maps | NebraskaView | Nebraska
Nebraska geologic map data
National Geologic Map Database - USGS
Nebraska Bedrock Geology
Surficial geologic map of the greater Omaha area, Nebraska and …