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Sign language is used by almost every deaf person as a means of communication (14 фев 1721 г. – 14 фев 2018 г.)

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The Evolution of Sign Language

ByDavid Heineman

5 ноя 2017

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626

Дата:

14 фев 1721 г.

14 фев 2018 г.

~ 297 years

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