Image: https://cdn.whensthebirthday.com/gallery/2017/1/jonas-salk/jonas-salk-en-su-laboratorio.jpg
Jonas Salk
professions.scientist de Estados Unidos
Image: https://cdn.whensthebirthday.com/gallery/2017/1/jonas-salk/jonas-salk-en-su-laboratorio.jpg
professions.scientist de Estados Unidos