Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/4816
Is Reference of Ampliamento dei profili delle gallerie-it#Sense
Relèvement du gabarit des tunnels-fr#Sense
Verbreding van de tunnelprofielen-nl#Sense
Widening of tunnels-en#Sense
Διεύρυνση των διατομών των σηράγγων-el#Sense