PHYSICAL AND CHEMICAL CHARACTERISTICS OF BOVINE HIDE GELATIN WITH THE TYPE AND CONCENTRATION OF ACID AS A PRE -TREATMENT SOLUTION. Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit , [S. l.], v. 22, n. 1, p. 23–32, 2024. DOI: 10.58533/2dk4e462. Disponível em: https://e-jurnal.atk.ac.id/index.php/bptkspk/article/view/13. Acesso em: 22 dec. 2024.