Image: Oskar Hertwig
Size of this preview: 449 × 600 pixels. Other resolutions: 180 × 240 pixels | 623 × 832 pixels.
Original image (623 × 832 pixels, file size: 351 KB, MIME type: image/jpeg)
Description: Porträt von Oskar Hertwig, am Mikroskop sitzend. Aufgenommen von Nicola Perscheid, 1906.[1]
Usage Terms: Public domain
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