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1
by Spelman, Allen R.
Harrissburg : [Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey], 1966

Book
2
by Rones, Morris, 1922-1965
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1969

Government Document Book
3
by Chafetz, Henry S. (Henry Simon)
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geological Survey, 1969

Government Document Book
4
by Hobson, John Peter, 1928-
Harrisburg, PA. : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geological Survey, 1963

Government Document Book
5
by Wagner, Walter Richard, 1928-1974
Harrisburg : [Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey], 1966

Book
6
by Wagner, Warren R. (Warren Richard), 1912-1968
[Harrisburg] Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geological Survey, 1961

Government Document Book
7
by Sherwood, W. Cullen (William Cullen)
Harrisburg, PA. : Commonwealth of Pennsylvania [Department of Internal Affairs, Bureau of Topographic and Geological Survey], 1964

Thesis Book
8
by Lees, John A.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1967

Government Document Book