Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Perforación en túnel-es#Sense
Tunnelling-en#Sense
Percement d'un tunnel-fr#Sense
Perforazione di una galleria-it#Sense
Durchstich eines Tunnels-de#Sense
Perforazione in galleria-it#Sense
Abertura de um túnel-pt#Sense
Creusement-fr#Sense
Escavação subterrânea-pt#Sense
Perforación en galería-es#Sense
Tunnel driving-en#Sense
Tunnelbau-de#Sense
Perforation en souterrain-fr#Sense