Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Densité relative-fr#Sense
Indice di densità del soprassuolo-it#Sense
Stand density index-en#Sense
Grado de densidad-es#Sense
Bestockungsgrad-de#Sense
Degré de plénitude-fr#Sense