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Distribution of the iron ores mined in the Lake Superior Region in year 1902
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Instytucja:
community
Pełny tytuł:
Distribution of the iron ores mined in the Lake Superior Region in year 1902
Rok ilustracji:
1902
Wydawca:
Geological Survey (U.S.)
Skala mapy:
1:2 500 000
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