File:Heike Kamerlingh Onnes - 06 - Menso Kamerlingh Onnes- Jacob Maarten van Bemmelen, portrayed in 1910 on the occasion of his 80th birthday.png
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Heike_Kamerlingh_Onnes_-_06_-_Menso_Kamerlingh_Onnes-_Jacob_Maarten_van_Bemmelen,_portrayed_in_1910_on_the_occasion_of_his_80th_birthday.png (200 × 276 pixels, file size: 38 KB, MIME type: image/png)