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Monastic sign language was not meant for the deaf and was only used to keep periods of scilence (1 янв 900 г. – 11 март 1620 г.)

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The Evolution of Sign Language

ByDavid Heineman

5 ноя 2017

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626

Дата:

1 янв 900 г.

11 март 1620 г.

~ 720 years

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