Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/4816001
Is Reference of Unterpflasterbahn-de#Sense
Sub-surface railway-en#Sense
Metropolitana in galleria superficiale-it#Sense
Tramway souterrain-fr#Sense
Ondergrondse trambaan-nl#Sense
Tranvía subterráneo-es#Sense
Elétrico subterrâneo-pt#Sense
Underjordisk bane-da#Sense
Iarnród faoi dhromchla-ga#Sense
Maanalainen rata-fi#Sense
Tunnelbana-sv#Sense
Υπόγειος σιδηρόδρομος κάτωθεν λεωφόρου-el#Sense