“NEW ENVIRONMENTALLY BENIGN LEATHER TECHNOLOGY: COMBINATION TANNING USING VEGETABLE TANNIN, NAPHTHOL AND OXAZOLIDINE”. Jurnal Teknologi Industri Pertanian 18, no. 2 (April 9, 2012). Accessed December 24, 2025. https://journal.ipb.ac.id/jurnaltin/article/view/4752.