Nasution, Ade Fitriadi, and Rasmita Adelina Harahap. 2022. “Analysis of Soil Biological Conditions in Organic and Inorganic Agriculture Areas in Tanah Datar Regency”. Jurnal Pertanian Tropik 8 (3, Dec):169-74. https://doi.org/10.32734/jpt.v8i3, Dec.7543.