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Usgs Gulf Coast Region Assessment Team : Petroleum systems and geologic assessment of undiscovered oil and gas, Cotton Valley Group and Travis Peak-Hosston Formations, East Texas Basin and Louisiana-Mississippi Salt Basins Provinces of the Northern Gulf Coast Region / by USGS Gulf Coast Region Assessment Team.
Usgs Minnesota Water Science Center : Methods used to compute low-flow frequency characteristics for continuous-record streamflow stations in Minnesota, 2006 / by Thomas A. Winterstein, Allan D. Arntson, and Gregory B. Mitton ; in cooperation with the Minnesota Pollution Control Agency.