Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Frequency filter-en#Sense
Filtre de fréquence-fr#Sense
Filtro de frequência-pt#Sense
Filtro di frequenza-it#Sense
Φίλτρο συχνότητας-el#Sense
Filtro de frecuencia-es#Sense
Frequentiefilter-nl#Sense
Frekvensfilter-da#Sense