Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Percentage of voids in the rubble-en#Sense
Proporción de huecos-es#Sense
Proporzione dei vuoti-it#Sense
Verhaeltnis der Hohlraeume-de#Sense
Holle ruimte verhouding-nl#Sense
Hulrumsprocent-da#Sense
Proportion des vides-fr#Sense
Ποσοστό κενών-el#Sense