Anwar, E.K., Nurlaily, R., Sarmah, . and Purwani, J. 2014. Land Suitability Study in Ultisols for Soybean Based on Soil Fauna. JOURNAL OF TROPICAL SOILS. 18, 3 (Sep. 2014), 231–239. DOI:https://doi.org/10.5400/jts.2013.v18i3.231-239.