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Science Paper
Vol. s3-15, Issue 90, 1878
June 01, 1878 EDT
The Upper Devonian Rocks of Southwest Pennsylvania
John James Stevenson
,
Earth sciences
•
https://doi.org/10.2475/ajs.s3-15.90.423
American Journal of Science
Stevenson, J. J. (1878). The upper Devonian rocks of southwest Pennsylvania.
American Journal of Science
,
s3-15
(90), 423–430.
https://doi.org/10.2475/ajs.s3-15.90.423
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