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1839 in technology
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Technology in the 1830s
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1830
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Subcategories
This category has the following 4 subcategories, out of 4 total.
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1839 books about technology
(1 C)
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1839 in mining
(3 C)
1839 in rail transport
(6 C, 1 F)
1839 vehicles
(1 C)