29
/fr/
fr
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
338145
29294
1
Créer
Public Timelines
Bibliothèque
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
26 mars 1953 - Jonas Salk announced that he was developing a trial vaccine for polio.
Description:
Jonas Salk announced that he was developing a trial vaccine for polio.
Ajouté au bande de temps:
26 nov. 2017
1
0
382
polio
Date:
26 mars 1953
Maintenaint
~ Il y a 71 ans