File:Heike Kamerlingh Onnes - 12 - Heike Kamerlingh Onnes at the age of 22.png
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Heike_Kamerlingh_Onnes_-_12_-_Heike_Kamerlingh_Onnes_at_the_age_of_22.png (200 × 277 pixels, file size: 33 KB, MIME type: image/png)