Geomorphic studies in the Appalachians of Pennsylvania

Pierre F. de Bethune

doi:10.2475/ajs.246.1.1

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de Bethune, P. F. (1948). Geomorphic studies in the Appalachians of Pennsylvania. American Journal of Science, 246(1), 1–22. https://doi.org/10.2475/ajs.246.1.1

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Geomorphic Studies in the Appalachians of Pennsylvania