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Geology of New Jersey / Geology of Pennsylvania / Geology of West Virginia / Marcellus Formation / Columbus Limestone / United States / Devonian / Geology of the Death Valley area / Geology / Geography of the United States / Shale


Spirifer Horizons of the Ohio Mid-Devonian
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Document Date: 2009-01-09 16:55:51

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File Size: 285,80 KB

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