Rosalina, F. and Febriadi, I. 2023. A Novel Ameliorant Biochar of Areca Nuts Skin and Sago Bark Waste for Increasing Soil Chemical Fertility. International Journal on Advanced Science, Engineering and Information Technology. 13, 3 (Jun. 2023), 1184–1189. DOI:https://doi.org/10.18517/ijaseit.13.3.18315.