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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
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1 gen 1856 anni - William Kelly invented the bessemer process! this process was invented to remove impurities from steel to make the steel stronger.

Aggiunto al nastro di tempo:

31 ago 2018

Data:

1 gen 1856 anni
Adesso
~ 168 years ago