Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Terreno instabile-it#Sense
Unstable slope-en#Sense
Pente instable-fr#Sense
Rutschhang-de#Sense
Terrain instable-fr#Sense
Pendio instabile-it#Sense
Pente en glissement-fr#Sense