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Signalong Indonesia (SI), according to Prof. Dr. Budiyanto, M.Pd, a lecturer at the UNESA Directorate of Disabilities, explained that sign language is intended for hearing friends rather than deaf people.
Signalong Indonesia (SI), according to Prof. Dr. Budiyanto, M.Pd, a lecturer at the UNESA Directorate of Disabilities, explained that sign language is intended for hearing friends rather than deaf people.