THE EFFECT OF DIFFERENT PRETANNING INGREDIENTS ON QUALITY OF THE SKIN OF TILAPIA FISH(OREOCHROMIS NILOTICUS) TANNED OF GAMBIER (UNCARIA GAMBIER). (2024). Berkala Penelitian Teknologi Kulit, Sepatu, Dan Produk Kulit , 23(2), 190-202. https://doi.org/10.58533/y2sngz53