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Frequency of Extrusions of Some Miocene Lavas in Oregon During an Apparent Transition of the Polarity of the Geomagnetic Field

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WATKINS, N. Frequency of Extrusions of Some Miocene Lavas in Oregon During an Apparent Transition of the Polarity of the Geomagnetic Field. Nature 206, 801–803 (1965). https://doi.org/10.1038/206801a0

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