Potassium-argon dates and the Tertiary floras of North America

J. F. Evernden; G. T. James

doi:10.2475/ajs.262.8.945

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Evernden, J. F., & James, G. T. (1964). Potassium-argon dates and the Tertiary floras of North America. American Journal of Science, 262(8), 945–974. https://doi.org/10.2475/ajs.262.8.945

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Potassium-argon Dates and the Tertiary Floras of North America