Die Grundlagen der Einsteinschen Relativitäts-Theorie
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22 min"Produced by Colonna-Film, Berlin, directed by (Professor) Hanns Walter Kornblum, with the collaboration of Dr. Otto Buek, Prof. Dr. Fanta (Prag), Prof. Dr. Rudolf Laemmel (Zürich), Prof. Dr. G. F. Nicolai. Censured: 30. 3. 1922, 2.045 m, released in March 1922.