29
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
338242
29299
1
Create
Public Timelines
Library
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
apr 13, 1955 - The Salk vaccine was proven safe.
Added to timeline:
26 Nov 2017
0
0
405
eee
Date:
apr 13, 1955
Now
~ 69 years ago