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Handicraft
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Civil engineering
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Tunnels
Tunnels
Topic
sh85138674
·
id.loc.gov
Used for
Highway tunnels
Road tunnels
Broader Terms (2)
Civil engineering
Underground construction
Hierarchy
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Narrower Terms (7)
Gate roads (Mining)
Railroad tunnels
Shotcrete-lined tunnels
Subway tunnels
Tunnel lining
Underwater tunnels
Water tunnels