āđ€āļ™āļ·āđˆāļ­āļ‡āđƒāļ™āđ‚āļ­āļāļēāļŠāđ„āļ”āđ‰āļ•āļĩāļžāļīāļĄāļžāđŒāļšāļ—āļ„āļ§āļēāļĄāļ§āļīāļˆāļąāļĒ āđ€āļĢāļ·āđˆāļ­āļ‡ "Tonal Erosion in a Minority Ethnic Language and Its Implications for Language Education: Evidence from Intergenerational Tonal Change in Phuan, Northeastern Thailand" āļ§āļēāļĢāļŠāļēāļĢ Journal of Education and Training Studies āļāļēāļ™āļ‚āđ‰āļ­āļĄāļđāļĨ Scopus Q4

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