MANUFACTURING SOAP FROM WASTE COOKING OIL USING COLD AND HOT PROCESSES. FULafia Journal of Science and Technology , [S. l.], v. 6, n. 2, p. 32–36, 2020. Disponível em: https://lafiascijournals.org.ng/index.php/fjst/article/view/179.. Acesso em: 22 dec. 2024.