Herlambang, Susila, Danang Yudhiantoro, Indriana Lestari, and Muammar Gomareuzzaman. 2022. “Application of Sheep Urine Fermentation and Biochar Coconut for Growth Vegetables Plant”. RSF Conference Series: Engineering and Technology 1 (1):238-43. https://doi.org/10.31098/cset.v1i1.409.