“THE USE OF A CROCKMETER MACHINE FOR RUBBING TEST ON PARCHMENT SKIN”. Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit 21, no. 2 (December 16, 2024): 202–209. Accessed November 5, 2026. https://e-jurnal.politeknikatk.ac.id/bptkspk/article/view/80.