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> (STRA47) Quartz pebbles with mostly high roundness and moderate sphericity, Pennsylvanian Potsville Conglomerate, Scranton, PA
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14-MAR-2008
(STRA47) Quartz pebbles with mostly high roundness and moderate sphericity, Pennsylvanian Potsville Conglomerate, Scranton, PA
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(c) Doug Sherman
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