Search subject headings
...
Stats
Colophon
Occupations
›
Handicraft
›
Industrial arts
›
Engineering
›
Civil engineering
›
Tunnels
Tunnels
Topic
sh85138674
·
id.loc.gov
Used for
Highway tunnels
Road tunnels
Broader Terms (2)
Civil engineering
Underground construction
Hierarchy
Hide
Broader groupings:
show peers
|
show narrower
Narrower Terms (7)
Gate roads (Mining)
Railroad tunnels
Shotcrete-lined tunnels
Subway tunnels
Tunnel lining
Underwater tunnels
Water tunnels
