Showing 1 - 1 results of 1 for search '"Basalt Oregon Clackamas County"', query time: 1.13s Refine Results
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    The stratigraphy and structure of the Columbia River basalt group in the Bull Run watershed, Multnomah and Clackamas Counties, Oregon
    by Vogt, Beverly Frobenius
    Published 1981
    Subjects: “...Basalt -- Oregon -- Clackamas County...”
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