File:Heike Kamerlingh Onnes - 33 - James Dewar in the Royal Institution in London, around 1900.png
Heike_Kamerlingh_Onnes_-_33_-_James_Dewar_in_the_Royal_Institution_in_London,_around_1900.png (400 × 572 pixels, file size: 160 KB, MIME type: image/png)
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