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Richland quadrangle, by Carlyle Gray, Alan R. Geyer, Dean B. McLaughlin. by Series: Atlas (Pennsylvania. Bureau of Topographic and Geologic Survey) ; 167d.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: [Harrisburg, Pennsylvania Topographic and Geologic Survey, 1958]
Availability: Items available for loan: Education Library (1)Call number: 557 G294 A167D.
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Guide to the geology of Cornwall, Pennsylvania, by Carlyle Gray, Davis M. Lapham. by Series: General geology report ; G35.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: [Harrisburg] Topographic and Geologic Survey, 1961
Availability: Items available for loan: Education Library (1)Call number: 557 G294 G35.
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Geology and origin of the Triassic magnetite deposit and diabase at Cornwall, Pennsylvania, by Davis M. Lapham and Carlyle Gray. by Series: Mineral resource report ; M56.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Harrisburg [Pennsylvania Topographic and Geologic Survey] 1973
Availability: Items available for loan: Education Library (1)Call number: 557 G294 M56.
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