SUBSTITUTION OF ACID AND REACTIVE DYESTUFF MATERIALS IN THE WET BLUE SHEEP SKIN DYEING METHOD FOR NAPA LEATHER AND SUEDE GARMENTS ON WATER WASHING RESISTANCE AS A LABORATORY MANAGEMENT EFFORTS. Settings Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit 2025, 24 (1), 22-28. https://doi.org/10.58533/p9ck7k13.