File:Nikolai Alexandrovich Gerngross.jpg
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![File:Nikolai Alexandrovich Gerngross.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/9/98/Nikolai_Alexandrovich_Gerngross.jpg/422px-Nikolai_Alexandrovich_Gerngross.jpg?20231210083333)
Size of this preview: 422 × 600 pixels. Other resolutions: 169 × 240 pixels | 563 × 800 pixels.
Original file (563 × 800 pixels, file size: 36 KB, MIME type: image/jpeg)