1
2
3
4
5
6
7
9
10
gan Henry, Christopher D.
[Reston, Va.?] : U.S. Geological Survey, 1984
“...University of Texas at Austin. Bureau of Economic Geology...”[Reston, Va.?] : U.S. Geological Survey, 1984
Government Document
Map
11
13
gan Senger, Rainer K.
Austin, Tex. : Bureau of Economic Geology, University of Texas at Austin, 1987
“...University of Texas at Austin. Bureau of Economic Geology...”Austin, Tex. : Bureau of Economic Geology, University of Texas at Austin, 1987
Government Document
Llyfr
14
gan Smith, Gary E.
Austin, Tex. : Bureau of Economic Geology, the University of Texas at Austin, 1982
“...University of Texas at Austin. Bureau of Economic Geology...”Austin, Tex. : Bureau of Economic Geology, the University of Texas at Austin, 1982
Government Document
Llyfr
15
16
gan Ruppel, Stephen C.
Austin, Tex. : Bureau of Economic Geology, University of Texas at Austin, 1988
“...University of Texas at Austin. Bureau of Economic Geology...”Austin, Tex. : Bureau of Economic Geology, University of Texas at Austin, 1988
Government Document
Llyfr
17
gan Morton, Robert A.
Austin, Tex. : Bureau of Economic Geology, University of Texas at Austin, 1989
“...University of Texas at Austin. Bureau of Economic Geology...”Austin, Tex. : Bureau of Economic Geology, University of Texas at Austin, 1989
Government Document
Llyfr
18
19
gan Woodruff, C. M.
Washington, D.C. : U.S. Dept. of Energy, 1979
“...University of Texas at Austin. Bureau of Economic Geology...”Washington, D.C. : U.S. Dept. of Energy, 1979
Llyfr
20
gan Ferguson, W. Keene (Walter Keene)
Austin, Tex. : Bureau of Economic Geology, the University Texas at Austin, 1981
“...University of Texas at Austin. Bureau of Economic Geology...”Austin, Tex. : Bureau of Economic Geology, the University Texas at Austin, 1981
Llyfr