Image: https://cdn.whensthebirthday.com/gallery/2017/1/wilhelm-rontgen/themitralvalve-org-wilhelm-conrad.jpg
Wilhelm Rontgen
professions.scientist de Alemania
Image: https://cdn.whensthebirthday.com/gallery/2017/1/wilhelm-rontgen/themitralvalve-org-wilhelm-conrad.jpg
professions.scientist de Alemania