Engineer Valdemar Poulsen at His Station For Wireless Telegraphy in Lyngby and in his Laboratory
मूल शीर्षक: Ingeniør Valdemar Poulsen paa sin station for traadløs telegrafi i Lyngby og i sit laboratorium
Valdemar Poulsen at his station for wireless telegraphing in Lyngby.
दल
| भूमिका | नाम |
|---|---|
| Director | Anker Kirkeby |