Harlina Harja et al. 2026. AN ANALYSIS OF STUDENTS’ DIFFICULTIES IN VOCABULARY MASTERY AT ELEVENTH GRADE IN ONE OF MADRASAH ALIYAH NEGERI IN BATANG HARI. International Journal Of Education And Social Research (IJESR). 4, 1 (Mar. 2026), 1–7. DOI:https://doi.org/10.62017/ijesr.v4i1.154.