Courses by National Institute of Education (NIE) / Courses in Sri LankaCertificate Course in Sign Language and Diploma Course in Sign Language 2022 – National Institute of Education August 14, 2022August 24, 2022 Closing Date – 2022-09-10 Here you can see the Sinhala Advertisement… ad-si-20220812-3 Sinhala AdvertisementDownloadSource – Dinamina (2022.08.12)