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. (2025). Berkala Penelitian Teknologi Kulit, Sepatu, Dan Produk Kulit , 24(1), 22-28. https://doi.org/10.58533/p9ck7k13