tunnels

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

tunnels

Non-preferred terms

Broader Terms

BT↑ transportation features

Related terms

RT⇆ canals

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

Search