File:Unsichtbare photographisch wirksame Strahlen.pdf
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:02, 26 October 2009 | 1,077 × 1,560, 3 pages (306 KB) | wikimediacommons>Paulis | {{Information |Description=Unsichtbare, photographisch wirksame Strahlen. In: Photographische Rundschau 28 (Okt. 1900) S. 189-191 |Source={{GBS|XcwEAAAAYAAJ|US}} |Date=1900 |Author=Otto Walkhoff |Perm |
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