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Fig. P-12 -- Thickness of the Harrisburg (No. 5) and Springfield (No. 5) Coal Members (based on map by K. E. Clegg).
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|current||14:41, 5 August 2015||1,455 × 2,210 (640 KB)||Alan Myers||Fig. P-12 -- Thickness of the Harrisburg (No.5) and Springfield (No. 5) Coal Members (based on may by K.E. Glegg).|
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