Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Waarmede gaten in de kool geboord worden-nl#Sense
Coal drilling machine-en#Sense
Kohlenbohrmaschine-de#Sense
Coal drill-en#Sense
Kohlenbohrer-de#Sense
Kolenboormachine-nl#Sense
Koolboormachine-nl#Sense
Ανθρακοδράπανο-el#Sense
Perforatrice a charbon-fr#Sense
Machine-nl#Sense