PanjaitanA., AnasI., WidyastutiR., & WidayatiW. E. (2015). Ability of Endophytic Diazotrophic Bacteria in Stimulating Growth of Oil Palm Seedlings (Elaeis guineensis Jacq). Jurnal Ilmu Tanah Dan Lingkungan, 17(1), 1-7. https://doi.org/10.29244/jitl.17.1.1-7