“UTILIZATION OF CHROME-TANNED LEATHER SHAVING AND BUFFING WASTE AS RAW MATERIALS FOR KEYCHAINS USING POLYURETHANE ADHESIVE”, Settings Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit , vol. 25, no. 1, pp. 23–30, Jun. 2026, doi: 10.58533/fd38aa61.