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Bulletin of the Geological Society of America

GSA Bulletin October 01, 1939, Vol.50, 1475-1492. doi:https://doi.org/10.1130/GSAB-50-1475
GSA Bulletin October 01, 1939, Vol.50, 1493-1510. doi:https://doi.org/10.1130/GSAB-50-1493
GSA Bulletin October 01, 1939, Vol.50, 1511-1528. doi:https://doi.org/10.1130/GSAB-50-1511
GSA Bulletin October 01, 1939, Vol.50, 1529-1534. doi:https://doi.org/10.1130/GSAB-50-1529
GSA Bulletin October 01, 1939, Vol.50, 1535-1552. doi:https://doi.org/10.1130/GSAB-50-1535
GSA Bulletin October 01, 1939, Vol.50, 1553-1572. doi:https://doi.org/10.1130/GSAB-50-1553
GSA Bulletin October 01, 1939, Vol.50, 1573-1624. doi:https://doi.org/10.1130/GSAB-50-1573
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