Geology and uranium deposits in the Cave Hills area, Harding County, South Dakota [electronic resource] / by G.N. Pipiringos, W.A. Chisholm, and R.C. Kepferle.
Imprint
[Washington D.C.] : U.S. Dept. of the Interior, Geological Survey : For sale by the Supt. of Docs., U.S. G.P.O., 1965.