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Index by author

December 01, 1920; Volume s4-50,Issue 300

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    The nature of Paleozoic crustal instability in eastern North America
    Charles Schuchert
    American Journal of Science December 1920, s4-50 (300) 399-414; DOI: https://doi.org/10.2475/ajs.s4-50.300.399
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    Notes on the Tertiary intrusives of the lower Pecos Valley, New Mexico
    Douglas Ramsay Semmes
    American Journal of Science December 1920, s4-50 (300) 415-430; DOI: https://doi.org/10.2475/ajs.s4-50.300.415
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    Entelodonts in the Marsh Collection
    E. L. Troxell
    American Journal of Science December 1920, s4-50 (300) 431-445; DOI: https://doi.org/10.2475/ajs.s4-50.300.431
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    The rhyolites of Lipari
    H. S. Washington
    American Journal of Science December 1920, s4-50 (300) 446-462; DOI: https://doi.org/10.2475/ajs.s4-50.300.446
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American Journal of Science
Vol. s4-50, Issue 300
1 Dec 1920
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