Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6826
Is Reference of Alternância-pt#Sense
Halvbølge-da#Sense
Alternance-fr#Sense
Afwisseling-nl#Sense
Ημιπερίοδος-el#Sense
Ημίκυκλος-el#Sense
Halbschwingung-de#Sense
Halvvåg-sv#Sense
Alternancia-es#Sense
Alternation-en#Sense
Puolijakso-fi#Sense