Silaban, M. U. E., W. J. N. Kumolontang, and J. Purbopuspito. “Soil Phosphorus and Potassium Nutrient; C-Organik; And PH at PT J Resources Bolaang Mongondow Mine Reclamation Land”. Soil and Environment Journal, vol. 2, no. 2, Nov. 2024, pp. 39-52, doi:10.35791/saej.v2i2.58991.