1. 1
    Author: Barnes, John Henry, 1946-
    Published 1991
    In collection: Published Materials
    Book

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    Rocks and minerals of Pennsylvania
  2. 2
    Author: Barnes, John Henry, 1946-
    Published 2001
    In collection: Published Materials
    Government Document Book

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    The nonfuel mineral resources of Pennsylvania
  3. 3
    Author: Barnes, John Henry, 1946-
    Published 2002
    In collection: Published Materials
    The geological story of Pennsylvania.
    Government Document Book

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    The geological story of Pennsylvania
  4. 4
    Author: Barnes, John Henry, 1946-
    Published 2004
    In collection: Published Materials
    Click here for the online version.
    Government Document Book

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    Rocks and minerals of Pennsylvania

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Related Subjects

Mineralogy Petrology Geology Mines and mineral resources Nonfuel minerals