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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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Sign language and its alphabet are standardized to what they are today, where every word in English could be said in sign language (15 juin 1720 – 15 juin 2018)
Ajouté au bande de temps:
The Evolution of Sign Language
By
David Heineman
5 nov. 2017
0
0
633
Date:
15 juin 1720
15 juin 2018
~ 298 years
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