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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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Duplex ruler (14 h 39 min, 21 nov 2018 ans – 14 h 49 min, 1 juill. 2019 ans)
Description:
In 1891 The duplex rule was invented by William Cox
Ajouté au bande de temps:
Counting/Caculating Inventions
By
Emily Stark
4 nov. 2019
0
0
360
Date:
14 h 39 min, 21 nov 2018 ans
14 h 49 min, 1 juill. 2019 ans
~ 7 months
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