U.S. Dept. of the Interior : For sale by the Supt. of Docs., U.S. G.P.O.,
Lee, Roger W.
United States. Bureau of Land Management.
Montana Bureau of Mines and Geology.
Geological Survey (U.S.)
Geological Survey water-supply paper ; 2076
Geochemistry of water in the Fort Union formation of the northern Powder River basin, southeastern Montana
Geochemistry of water in the Fort Union formation of the northern Powder River basin, southeastern Montana
Geochemistry of water in the Fort Union formation of the northern Powder River basin, southeastern Montana