Astuti, Dwi. “Effectiveness of Aluminum Electrode in Reducing Bod, Cod, Ammoniac, and Chromium in Leather Tannering Waste With the Electrocoagulation Process”. Science Midwifery 10, no. 5 (December 26, 2022): 4378–4382. Accessed April 27, 2026. https://midwifery.iocspublisher.org/index.php/midwifery/article/view/1033.