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27 out 1680 ano - George Dalgarno publsihed Didascalocophus, showing a alphabet where pointing to different areas of the hand meant different letters

Adicionado na linha do tempo:

The Evolution of Sign Language

ByDavid Heineman
5 nov 2017
0
0
626

Data:

27 out 1680 ano
Agora
~ 345 years ago

Imagens:

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