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1by Barnes, John Henry, 1946-Subjects: “...Petrology Pennsylvania Popular works....”
Published 1991
Government Document Book -
2by Waldo, Allen Worcester, 1904-Subjects: “...Petrology Pennsylvania McKean County....”
Published 1938
Book -
3by Honess, Arthur Pharoah, 1887-Subjects: “...Petrology Pennsylvania Dixonville....”
Published 1926
Book -
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6by Smith, Richard Elbridge, 1932-Subjects: “...Petrology Pennsylvania Tyrone....”
Published 1966
Thesis Book -
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8by Bascom, F. (Florence), 1862-1945Subjects: “...Petrology Pennsylvania....”
Published 1896
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9
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10by Bascom, F. (Florence), 1862-1945Subjects: “...Petrology Pennsylvania....”
Published 1896
Gale Cengage Learning, Nineteenth Century Collections Online
HathiTrust Digital Library, Full view
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University of North Texas, Denton, Tex.
connect to online version. (PDF)
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Full text - Unlimited user access.
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Gale, Nineteenth Century Collections Online
Government Document eBook -
11Subjects: “...Petrology. http://id.loc.gov/authorities/subjects/sh85100472...”
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Government Document eBook