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Christoph Sterz
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4 years ago | |
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| Fotothek_df_tg_0003755_Physik_^_Zeit_^_Messgerät_^_Uhr.jpg | 4 years ago | |
| Fotothek_df_tg_0003783_Uhr_^_Uhrwerk.jpg | 4 years ago | |
| Fotothek_df_tg_0005949_Physik_^_Mechanik_^_Hebezeug_^_Zahnrad.jpg | 4 years ago | |
| Fotothek_df_tg_0005953_Physik_^_Mechanik_^_Uhr_^_Getriebe_^_Zahnrad_^_Wasserkraft.jpg | 4 years ago | |
| Fotothek_df_tg_0005956_Physik_^_Mechanik_^_Uhr_^_Wasserdruck.jpg | 4 years ago | |
| Fotothek_df_tg_0005962_Physik_^_Mechanik_^_Getriebe_^_Mühle_^_Sägen_^_Wasserrad.jpg | 4 years ago | |
| Fotothek_df_tg_0006396_Mechanik_^_Hebevorrichtung_^_Kurbel_^_Zahnrad.jpg | 4 years ago | |
| Fotothek_df_tg_0006402_Mechanik_^_Zahnrad.jpg | 4 years ago | |
| Fotothek_df_tg_0006433_Mechanik_^_Zeitmessung_^_Uhr.jpg | 4 years ago | |
