AN EVALUATION OF YELLOW OLEANDER (THEVETIA PERUVIANA) SEED OIL AS A CUTTING LUBRICANT USING THE EXAMPLE OF MEDIUM CARBON STEEL FOR TURNING ON THE LATHE MACHINE. Journal of Engineering Studies and Research, [S. l.], v. 30, n. 3, p. 26–35, 2025. DOI: 10.29081/jesr.v30i3.003. Disponível em: https://jesr.ub.ro/journal/article/view/462. Acesso em: 13 sep. 2025.