Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811
Is Reference of Ytterbium-da#Sense
Ytterbine-fr#Sense
Υττερβίνη-el#Sense
Ytterbine-nl#Sense
Ytterbinerde-de#Sense
Ytterbia-en#Sense
Iterbina-es#Sense
Itterbina-it#Sense