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Keywords from Image Description:
Fernsignal Patrouille. Optische Station fr Nacht mit Zeiss Apparat bei der MauthnerSpitze. BildID . depicted place austria de Kriegspressequartier Lichtbildstelle Wien credit line sterreichische Nationalbibliothek Austrian National Library bildarchivaustria at Catalog bildarchivaustria at aspx piBildID accession number WK