Content-Length: 124815 | pFad | http://www.usgs.gov/media/images/usgs-regional-map
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A map of the USGS Regions that are aligned to the DOI Unified Regions (as of August 2019).
The maps shows USGS Region names:
Public Domain.
Fetched URL: http://www.usgs.gov/media/images/usgs-regional-map
Alternative Proxies:
