Category:1850 in technology
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This category has the following 5 subcategories, out of 5 total.
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Media in category "1850 in technology"
The following 2 files are in this category, out of 2 total.
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Morris Canal, Inclined Plane 9 West, Port Warren, NJ - ASME plaque.jpg 1,413 × 941; 572 KB
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Nouvelle méthode pour indiquer les noms des rues de Paris et des édifices publics.jpg 5,647 × 4,593; 9.69 MB