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2. The Cambrian rocks of Pennsylvania
3. Correlation papers : Cambrian
4. The Cambrian rocks of Pennsylvania
5. Corynexochida and Ptychopariida (Trilobita, Arthropoda) of the Ehmaniella Biozone (Middle Cambrian), Utah and Nevada
6. The Chopawamsic Formation-- : a new stratigraphic unit in the Piedmont of northeastern Virginia
7. The Chopawamsic Formation-- : a new stratigraphic unit in the Piedmont of northeastern Virginia
8. Controversy in Victorian geology : the Cambrian-Silurian dispute
9. Controversy in Victorian Geology : The Cambrian-Silurian Dispute
10. Cambrian system (restricted) of the southern Appalachians
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