File:Von Voigt und Zuntz in Berlin um 1900 entwickeltes Fahrradergometer.jpg
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![File:Von Voigt und Zuntz in Berlin um 1900 entwickeltes Fahrradergometer.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Von_Voigt_und_Zuntz_in_Berlin_um_1900_entwickeltes_Fahrradergometer.jpg/706px-Von_Voigt_und_Zuntz_in_Berlin_um_1900_entwickeltes_Fahrradergometer.jpg?20120728145349)
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