// todo need optimize like in event.jsp. Add indexing or not indexing this page. Sign language is used by almost every deaf person as a means of communication (14 fev 1721 ano – 14 fev 2018 ano) (Linha do tempo)
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Sign language is used by almost every deaf person as a means of communication (14 fev 1721 ano – 14 fev 2018 ano)

Adicionado na linha do tempo:

The Evolution of Sign Language

ByDavid Heineman
5 nov 2017

Data:

14 fev 1721 ano
14 fev 2018 ano
~ 297 years
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