2025. 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. Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit . 24, 1 (Aug. 2025), 22–28. DOI:https://doi.org/10.58533/p9ck7k13.