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 [Internet]. 2025 Aug. 31 [cited 2025 Sep. 10];24(1):22-8. Available from: http://e-jurnal.atk.ac.id/new-jurnal/index.php/bptkspk/article/view/109