Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Σωληνόμορφος ράβδος-el#Sense
Zwaarstang-nl#Sense
Tubo-mestre-pt#Sense
Drill collar-en#Sense
Striking bar-en#Sense
Coiléar druilire-ga#Sense
Schwerstange-de#Sense
Tige-masse-fr#Sense
D.C.-en#Sense
Hohlschwerstange-de#Sense
Masse-tige-fr#Sense
Asta pesante-it#Sense