Kotchana S, Tongpoon-Patanasorn A. EFL Learners’ Vocabulary Size: A Case in the Northeastern Region of Thailand. ASEAN J Ed [Internet]. 2015 Dec. 29 [cited 2024 May 19];1(1):9-26. Available from: https://so01.tci-thaijo.org/index.php/AJE/article/view/180797