Yulnafatmawita, . and Anggriani, F. 2013. Fresh Organic Matter Application to Improve Aggregate Stability of Ultisols under Wet Tropical Region. JOURNAL OF TROPICAL SOILS. 18, 1 (Mar. 2013), 33–44. DOI:https://doi.org/10.5400/jts.2013.v18i1.33-44.