THE EFFECT OF COMBINATION VEGETABLE TANNING MATERIALS AND SULPHITED OIL ON THE PHYSICAL PROPERTIES OF JACKET LEATHER . Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit , [S. l.], v. 21, n. 2, p. 297–207, 2024. DOI: 10.58533/rhvpj273. Disponível em: https://e-jurnal.atk.ac.id/index.php/bptkspk/article/view/93. Acesso em: 4 apr. 2025.