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GSA Bulletin May 01, 1957, Vol.68, 527-542. doi:https://doi.org/10.1130/0016-7606(1957)68[527:SOUPOS]2.0.CO;2
GSA Bulletin May 01, 1957, Vol.68, 543-554. doi:https://doi.org/10.1130/0016-7606(1957)68[543:FS]2.0.CO;2
GSA Bulletin May 01, 1957, Vol.68, 555-566. doi:https://doi.org/10.1130/0016-7606(1957)68[555:CTTGOT]2.0.CO;2
GSA Bulletin May 01, 1957, Vol.68, 567-576. doi:https://doi.org/10.1130/0016-7606(1957)68[567:MAOTDP]2.0.CO;2
GSA Bulletin May 01, 1957, Vol.68, 577-610. doi:https://doi.org/10.1130/0016-7606(1957)68[577:MAVLIC]2.0.CO;2
GSA Bulletin May 01, 1957, Vol.68, 611-644. doi:https://doi.org/10.1130/0016-7606(1957)68[611:NOFILE]2.0.CO;2
GSA Bulletin May 01, 1957, Vol.68, 645-652. doi:https://doi.org/10.1130/0016-7606(1957)68[645:NOTFIL]2.0.CO;2
GSA Bulletin May 01, 1957, Vol.68, 653-654. doi:https://doi.org/10.1130/0016-7606(1957)68[653:OOP]2.0.CO;2
GSA Bulletin May 01, 1957, Vol.68, 655-656. doi:https://doi.org/10.1130/0016-7606(1957)68[655:OOMGRI]2.0.CO;2
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