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21Published 1991Subjects: “...Faults (Geology) Nevada Maps....”
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22Published 2020Subjects: “...Geology Oregon Clackamas County Maps....”
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23Published 2020Subjects: “...Geology Oregon Clackamas County Maps....”
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24by Swanson, Donald A. (Donald Alan), 1938-Subjects: “...Sediments (Geology) Washington (State)...”
Published 1983
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25by Tennyson, Marilyn Elizabeth, 1948-Subjects: “...Petroleum Geology Oregon....”
Published 1987
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26
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27Published 1991Subjects: “...Geology Oregon Maps....”
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28Published 1992Subjects: “...Geology Oregon Maps....”
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29by Stanley, Richard G.Subjects: “...Petroleum Geology Oregon....”
Published 1991
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30
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31
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32by Swanson, Donald A. (Donald Alan), 1938-Subjects: “...Geology Oregon Crook County Maps....”
Published 1969
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33by Robinson, Paul T.Subjects: “...Geology Oregon Jefferson County Maps....”
Published 1975
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34by Walker, George Walton, 1921-Subjects: “...Geology Oregon Baker County Maps....”
Published 1979
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35Subjects: “...Geology, Stratigraphic Miocene....”
Government Document Book -
36by Trimble, Donald E.Subjects: “...Geology Oregon Portland....”
Published 1963
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37by Personius, Stephen F.Subjects: “...Terraces (Geology) Coast Ranges....”
Published 1993
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38by Peck, Dallas L. (Dallas Lynn), 1929-Subjects: “...Geology, Stratigraphic Tertiary. http://id.loc.gov/authorities/subjects/sh85054114...”
Published 1964
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39by Fisher, Richard V. (Richard Virgil), 1928-2002Subjects: “...Geology, Stratigraphic Oligocene....”
Published 1968
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40by Williams, Howel, 1898-1980Subjects: “...Geology Oregon Crater Lake National Park....”
Published 1942
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