Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Jakso-fi#Sense
Pulsperiodetijd-nl#Sense
Période-fr#Sense
Período-pt#Sense
Jakson pituus-fi#Sense
Periodendauer-de#Sense
Pulse cycle time-en#Sense
Periodetid-da#Sense