Image: https://cdn.whensthebirthday.com/gallery/2017/1/john-backus/john-backus-86-ocean-city.jpg
John Backus
professions.scientist de Estados Unidos
Image: https://cdn.whensthebirthday.com/gallery/2017/1/john-backus/john-backus-86-ocean-city.jpg
professions.scientist de Estados Unidos