Kemkan W, Chaimano K. The Analysis of Changes in the Ancient Vocabularies from the Royal Institute Dictionary from Year 1950 to Year 2011 (B.E. 2493 to B.E. 2554). ambj [internet]. 2020 Jun. 29 [cited 2026 Sep. 29];5(1):163-76. available from: https://so06.tci-thaijo.org/index.php/ambj/article/view/242251