Engineer Valdemar Poulsen at His Station For Wireless Telegraphy in Lyngby and in his Laboratory
Ingeniør Valdemar Poulsen paa sin station for traadløs telegrafi i Lyngby og i sit laboratorium
Режиссер
Дата выхода
1913
Valdemar Poulsen at his station for wireless telegraphing in Lyngby.