Alexandria Digital Library Feature Type Thesaurus

tunnels

Scope note
Underground or underwater passages. [USGS Circ 1048]

tunnels

Non-preferred terms

Broader Terms

Related terms

Date of creation
20-Nov-2007
Accepted term
20-Nov-2007
Descendant terms
0
More specific terms
0
Alternative terms
3
Related terms
1
Notes
1
Metadata
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