File:Prof Jan Štefan.jpg
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![File:Prof Jan Štefan.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Prof_Jan_%C5%A0tefan.jpg/474px-Prof_Jan_%C5%A0tefan.jpg?20230303125930)
Size of this preview: 474 × 599 pixels. Other resolutions: 190 × 240 pixels | 380 × 480 pixels | 923 × 1,167 pixels.
Original file (923 × 1,167 pixels, file size: 99 KB, MIME type: image/jpeg)