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21Subjects: “...Geology Indiana Marion County....”
Book -
22
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23
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24
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25
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26
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27
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28
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29Subjects: “...Geology Indiana....”
Book -
30by Oman, Charles L.Subjects: “...Coal Geology Indiana....”
Published 1993
Government Document Microform Book -
31
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32by Spencer, Frank Darwyn, 1904-Subjects: “...Geology Indiana Spencer County Maps....”
Published 1964
Government Document Map -
33
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34by Swann, D. H. (David Henry), 1915-Subjects: “...Petroleum Geology Indiana....”
Published 1951
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35
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36
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37
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38by Friedman, Samuel A. (Samuel Arthur), 1927-Subjects: “...Geology Indiana....”
Published 1960
Book -
39by Winslow, John Durfee, 1923-2004Subjects: “...Geology Indiana Salt Creek Valley....”
Published 1960
Book -
40