17
/
en
AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
27838
2041
2

jan 1, 1955 - Jonas Salk

Description:

Jonas Salk discovered and developed one of the first polio vaccines.

Added to timeline:

11 Sep 2017
0
0
234
Health

Date:

jan 1, 1955
Now
~ 63 years ago
PayPal - The safer, easier way to pay online!logo
About & FeedbackTermsPrivacy