Hidayat, B., A. Rauf, T. Sabrina, and Ali Jamil. “Evaluation Content of Pb in Phase Vegetative and Generative of Paddy by Aplication Azolla and Husk Biochar in Contaminated Paddy Field”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 31, no. 3 (February 17, 2017): 156–164. Accessed May 16, 2024. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/6809.