EVALUATION OF THE PHYSICAL AND CHEMICAL QUALITY OF CHROME-TANNED BOX LEATHER AS SHOE UPPER MATERIAL BASED ON ISO 20942:2019. Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit , [S. l.], v. 25, n. 1, p. 31–43, 2026. DOI: 10.58533/tq2jj348. Disponível em: https://e-jurnal.politeknikatk.ac.id/index.php/bptkspk/article/view/137. Acesso em: 6 aug. 2026.