Hirosuke Hirano, and Davin H. E. Setiamarga. “THE REPRODUCTION OF NATURAL SEA SLUDGE (HEDORO) USING PRESERVED NATURAL INORGANIC MATTERS”. GEOMATE Journal 16, no. 57 (December 31, 2018): 49–55. Accessed April 27, 2024. https://geomatejournal.com/geomate/article/view/2826.