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Geology
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Ackerman Lithr
collection
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Maps of North America
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Lake Michigan Region
Lake Superior Region
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Michigan
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Superior, Lake, Region
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Upper Peninsula
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Diagrams
Geological cross-sections
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Geological maps
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Maps
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publisher not identified
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Map Division
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cartographic
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: Diagrams
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: Lake Michigan Region
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: Ackerman Lithr.
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: 5cd94760-c52a-012f-bcd4-3c075448cc4b
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Section and diagram illustrat…