1
Author: Barnes, John Henry, 1946-
Published 2001
Record Source: Published Materials
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2
Author: Barnes, John Henry, 1946-
Published 2004
Record Source: Published Materials
Click here for the online version.
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3
Author: Barnes, John Henry, 1946-
Published 1991
Record Source: Published Materials
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4
Author: Barnes, John Henry, 1946-
Published 2002
Record Source: Published Materials
The geological story of Pennsylvania.
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Mineralogy Petrology Geology Mines and mineral resources Nonfuel minerals