Sihombing, Rano Karno, Erika Revida, and Suwardi Lubis. “Analysis of the Function of Forest Area in Spatial Planning of the North Tapanuli Regency”. Journal of Environmental and Development Studies 3, no. 2 (October 17, 2022): 36–48. Accessed May 21, 2026. https://talenta.usu.ac.id/jeds/article/view/8527.