Darma, Darma, Reniana Reniana, Risma Uli Situngkir, and Arens T. Solissa. 2026. “Development and Performance Test of Vertical Stirrer Rotary Blade Type of Sago Starch Extraction Machine Powered by Gasoline Engine”. Jurnal Natural 22 (1), 27 - 38. https://doi.org/10.30862/jn.v22i1.309.