Simanullang, R. and Gunawan, H. (2026) “Analisis Populasi Mikroorganisme Tanah di Lahan Perkebunan Kelapa Sawit Kebun Adolina PT Perkebunan Nusantara IV Regional II”, Ranah Research : Journal of Multidisciplinary Research and Development, 8(3), pp. 1905-1913. doi: 10.38035/rrj.v8i3.2108.