Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Âge de rotation-fr#Sense
Edad de aprovechamiento-es#Sense
Umtriebsalter-de#Sense
Ηλικία υλοτόμησης-el#Sense
Rotation age-en#Sense
Età del turno-it#Sense
Omloopsleeftijd-nl#Sense
Idade da revolução-pt#Sense
Benyttelsesalder-da#Sense