Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Poro alongado-pt#Sense
Soufflure allongée-fr#Sense
Επιμήκης σπηλαίωση-el#Sense
Elongated cavity-en#Sense
Gaskanal-de#Sense
Porenkanal-de#Sense