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1
Geology and mineral resources of York County, Pennsylvania /
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3
New Holland quadrangle; Geology and mineral resources, by / Description by Anna I. Jonas.
by Jonas, Anna I. 1881-1974.
Published 1926
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5
Geology and mineral resources of Adams county, Pennsylvania /
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6
Manganese and quartzite deposits in the Lick Mountain District, Wythe County, Virginia /
by Stead, Frank W. 1912-1981.
Published 1943
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7
Geology and mineral resources of the Honeybrook and Phoenixville quadrangles, Pennsylvania /
by Bascom, F. 1862-1945.
Published 1938
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8
Geology and mineral resources of the Middletown quadrangle, Pennsylvania /
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9
Geology of the Hanover-York district, Pennsylvania /
by Jonas, Anna I. 1881-1974.
Published 1944
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10
Contributions to Virginia geology--II.
Published 1939
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11
Index to the stratigraphy of North America /
by Willis, Bailey, 1857-1949.
Published 1912
Government Document Book
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12
Geology and mineral resources of the Quakertown-Doylestown district, Pennsylvania and New Jersey /
by Bascom, F. 1862-1945.
Published 1931
Book
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