Noraini A, Tjahjadi ME, Jasmani J. Classification of Slope for Coffee Plantation in Ngajum District, Indonesia. Poltanesa [Internet]. 2024 Jun. 19 [cited 2024 Sep. 19];25(1):110-5. Available from: https://e-journal.politanisamarinda.ac.id/index.php/tanesa/article/view/2227