Iswahyudi, B. and Bakri, B. 2019. Pemetaan Status Unsur Hara Fosfor Perkebunan Kelapa Sawit Rakyat di Kelurahan Babat Sumatera Selatan. Jurnal Lahan Suboptimal : Journal of Suboptimal Lands. 8, 1 (Jan. 2019), 77–85. DOI:https://doi.org/10.33230/JLSO.8.1.2019.408.