Said, Ahmad, Is Fatimah, and Dwiarso Rubianto. 2015. “Effect of Temperature on Rice Husk Asing and Its Application on Adsorbing Fe and Zn Metal in Patchouli Oil”. EKSAKTA: Journal of Sciences and Data Analysis 14 (2):71-86. https://doi.org/10.20885/eksakta.vol14.iss2.art7.