Agustina, D. et al. 2024. Effect of Synthetic Fertilizer on Diazotrophic Bacteria in Secondary Forest and Oil Palm Soils in Central Kalimantan. HAYATI Journal of Biosciences. 32, 1 (Nov. 2024), 106–116. DOI:https://doi.org/10.4308/hjb.32.1.106-116.