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Br Sembiring, F.E.D.R., Tengku Syarfina and Sekar Azzahra 2024. Comparison of the Vowel Formant Measurements in Karo and Simalungun Language. JADEs Journal of Academia in English Education. 5, 1 (Jun. 2024), 105-118. DOI:https://doi.org/10.32505/jades.v5i1.8745.