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USGS P 653

Early Silurian graptolites from southeastern Alaska and their correlation with graptolitic sequences in North America and the Arctic

Bibliographic Reference

Churkin, Michael, Jr., and Carter, Claire, 1970, Early Silurian graptolites from southeastern Alaska and their correlation with graptolitic sequences in North America and the Arctic: U.S. Geological Survey Professional Paper 653, 51 p.

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