Harefa, Darmawan. “THE INFLUENCE OF LOCAL WISDOM ON SOIL FERTILITY IN SOUTH NIAS”. Jurnal Sapta Agrica 3, no. 2 (November 4, 2024): 18-28. Accessed July 8, 2025. https://www.jurnal.uniraya.ac.id/index.php/Agrica/article/view/2333.