Yuharika Pratiwi et al. 2024. Relationship Between Lactic Acid Levels And Work Fatigue In Palm Oil Harvesters At PT. X Kampar Regency. International Journal of Medicine and Health. 3, 3 (Aug. 2024), 96–102. DOI:https://doi.org/10.55606/ijmh.v3i3.4163.