Soputan, Ronny, Verry R. Ch. Warouw, and Meldi Tieneke Magdalena Sinolungan. “Land Characteristics in Limestone Mining Areas In Ratatotok District, Southeast Minahasa Regency”. Jurnal Agroekoteknologi Terapan 5, no. 1 (June 11, 2024): 202–210. Accessed November 21, 2024. https://ejournal.unsrat.ac.id/v3/index.php/samrat-agrotek/article/view/55996.