EVALUATING THE IMPLEMENTATION OF JEMBER REGENCY SPATIAL PLANNING REGULATION NO. 1 OF 2015 IN GEOMORPHOLOGICAL CONSERVATION OF HUMMOCKS (GUMUK). ijed [Internet]. 2026 Apr. 25 [cited 2026 Apr. 3];5(1):139-53. Available from: https://journal.uns.ac.id/index.php/ijed/article/view/3001