Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/2831002
Is Reference of Φωτοηλεκτρική μέθοδος-el#Sense
Procedimiento fotoeléctrico-es#Sense
Foto-elektrisk optagelsesmetode-da#Sense
Procedimento fotoelettrico-it#Sense
Photoelektrisches Verfahren-de#Sense
Procédé photo-électrique-fr#Sense
Foto-elektrisch opnemen-nl#Sense
Photo-electric sound recording-en#Sense