Gumilar, Andri, Mindriany Syafila, Marisa Handajani, and Syarif Hidayat. 2022. “ADDITION OF Ni AND Mo AS AN EFFORT TO INCREASE ETHANOL IN PALM OIL WASTEWATER TREATMENT”. GEOMATE Journal 22 (91):14-21. https://geomatejournal.com/geomate/article/view/3301.