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1
by Millot, Georges
Paris, Masson 1963

Book
5
by Roen, John B.
Harrisburg : Commonwealth of Pennsylvania, State Planning Board, Bureau of Topographic and Geologic Survey, 1969

Book
6
by Keller, W. D., 1900-2001
Washington, [D.C.] : U.S. G.P.O., 1962

Book
7
[Harrisburg] Commonwealth of Pennsylvania, Department of Internal Affairs, Topographic and Geologic Survey, 1964
4th series.

Government Document Book
8
by Schultz, Leonard Gene, 1926-
Washington, [D.C.] : U.S. G.P.O., 1963

Book
10
by Faust, George Tobias, 1908-1985
Washington, D.C. : U.S. Department of the Interior, Bureau of Mines, 1940

Government Document Book
11
by Cole, W. A.
[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1954

Government Document Book
12
by Aase, James H.
[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1968

Government Document Book
13
by Leighton, Henry, 1884-
Harrisburg, Pa. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1959

Government Document Book
14
by Powell, H. E., Calhoun, W. A. (Willis A.), Miller, C. K.
[Washington, D.C.] : U.S. Department of the Interior, Bureau of Mines, 1962

Government Document Book
15
by Stanczyk, Martin H.
[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1968

Government Document Book
16
by Kelly, Hal J., Carter, George J., Rehm, Thomas R.
[Washington, D.C.] : U.S. Department of the Interior, Bureau of Mines, 1963

Government Document Book
17
by O'Neill, Bernard J., 1920-
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1973

Government Document Book
18
[Washington, D.C.] : US Bureau of the Census, 1981

Government Document Book
19
by Van Sant, Joel N.
[Washington, D.C.] : Washington : U.S. Department of the Interior, Bureau of Mines ; United States Government Printing Office, 1959

Government Document Book
20
by Yancey, H. F. (Harry Fagan), 1890-1970, Geer, M. R. (Max Richard), 1912-1981
[Washington, D.C.] : U.S. Department of the Interior, Bureau of Mines, 1962

Government Document Book