Reclamation of Spent Automobile Engine Lubricating Oil. Fountain Journal of Natural and Applied Sciences, [S. l.], v. 2, n. 1, 2013. DOI: 10.53704/fujnas.v2i1.42. Disponível em: https://new.fountainjournals.com/index.php/FUJNAS/article/view/42. Acesso em: 18 apr. 2026.