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Showing 1 - 20 results of 163 for search '"geological unit', query time: 0.40s Refine Results
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    by Hitchcock, O.H.
    Published 1853
    Subjects: ...Geology Maps. http://id.loc.gov/authorities/subjects/sh85054045...
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    by Geological Survey (U.S.)
    Published 1907
    Subjects: ...Geology--Alaska--Seward Peninsula--Maps...
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    Published 1913
    Subjects: ...Geology -- Alaska -- Seward Peninsula -- Maps...
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    by Geological Survey (U.S.)
    Published 1907
    Subjects: ...Geology--Alaska--Seward Peninsula--Maps...
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    by Gehrels, George Ellery
    Published 1986
    ... studies have delineated the major geologic units and features of these islands, and contribute to our...
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    Published 1907
    ... in 1903; additional areas from surveys made in 1900 and 1901 by U.S. Geological Survey". Color 1:250,000...
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