Turnip C. Pola Utilization of Nature Tourism Locations for Socio-Economic Life of Tigaras Village Community, Dolok Pardamean District, Simalungun Regency. ijopsor [Internet]. 1 Juni 2022 [dikutip 5 November 2026];10(1):33-44. Tersedia pada: https://www.ijobsor.pelnus.ac.id/index.php/ijopsor/article/view/49