SIHOMBING, A. J. . Productivity Analysis And Engineering Of Oil Palm Factory Productivity Process On Boiler Work Effectiveness At PTPN III PKS Sei Mangkei. Journal Basic Science and Technology, [S. l.], v. 10, n. 2, p. 60-66, 2022. Disponível em: http://ejournal.iocscience.org/index.php/JBST/article/view/1748. Acesso em: 10 jun. 2026.