Eden Efrin Tambunan, & Purjianto. (2026). THE EFFECT OF WORK MOTIVATION AND WORK ABILITY ON THE WORK PRODUCTIVITY OF PALM OIL HARVESTERS AT PTPN IV ADOLINA AFDELING II PLANTATION. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET), 5(7), 3403–3409. Retrieved from https://ijset.org/index.php/ijset/article/view/1933