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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
562020
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mar 26, 1953 - Jonas Salk invents the first polio vaccine

Added to timeline:

18 Jan 2018
0
0
346
TImeline for English Project

Date:

mar 26, 1953
Now
~ 71 years ago
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