Sondari, N. and Nurkhalidah, E.S. 2012. Application of Bokashi Botom Ash for Increasing Upland Rice Yield and Decreasing Grain Pb Content in Vitric Hapludans. JOURNAL OF TROPICAL SOILS. 17, 2 (Nov. 2012), 157–163. DOI:https://doi.org/10.5400/jts.2012.v17i2.157-163.