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Sign language is used by almost every deaf person as a means of communication (14 Feb 1721 Jahr – 14 Feb 2018 Jahr)
Zugefügt zum Band der Zeit:
The Evolution of Sign Language
By
David Heineman
5 Nov 2017
0
0
470
Datum:
14 Feb 1721 Jahr
14 Feb 2018 Jahr
~ 297 years
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