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Bulletin of the Geological Society of America (1923) (14778711541).jpg - SteinsplitterBot
NPS shenandoah-geologic-map.jpg - RKBot
NPS valley-forge-geologic-map.jpg - RKBot
Bulletin 799 Plate 6A Anticline in Antietam Schist.jpg - Jstuby
Bulletin 799 Plate 6B Closely folded Antietam Schist.jpg - Jstuby
Bulletin 799 Plate 2B Antietam Schist photomicrograph.jpg - Jstuby