Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Rotation primitive-fr#Sense
Rotación primitiva-es#Sense
Rotação primitiva-pt#Sense
Urwechselwirtschaft-de#Sense
Primitive rotation farming-en#Sense
Ålderdomligt växelbruk-sv#Sense
Rotazione primitiva-it#Sense
Vekseldrift-da#Sense
Alkukantainen vuoroviljely-fi#Sense
Primitieve vruchtwisseling-nl#Sense