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Radium Content of Oil- and Gas-Field Produced Waters in the Northern Appalach...
From the site: "Radium activity data for waters co-produced with oil and gas in New York and Pennsylvania have been compiled from publicly available sources and are presented... -
USGS National Geologic Map Database Collection
The National Geologic Map Database (NGMDB) is a Congressionally mandated national archive of geoscience maps, reports, and stratigraphic information. According to the Geologic...