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Multiplication tables (7 ore 50 min, 18 nov 2018 anni – 20 ore 53 min, 30 lugl 2019 anni)

Descrizione:

Until the 1960s, complicated computations were done with the help of mathematical tables.

Aggiunto al nastro di tempo:

Counting/Caculating Inventions

4 nov 2019

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360

Data:

7 ore 50 min, 18 nov 2018 anni

20 ore 53 min, 30 lugl 2019 anni

~ 8 months

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