Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Rayon sonore-fr#Sense
Ultrasone energiebundel-nl#Sense
Schallstrahl-de#Sense
Schallbuendel-de#Sense
Faisceau acoustique-fr#Sense
Fascio ultrasonoro-it#Sense
Geluidstraal-nl#Sense
Ultrasonic beam-en#Sense