“ESTIMASI SUMBER DAYA NIKEL MENGGUNAKAN METODE IDW (INVERSE DISTANCE WEIGHTING) DI SITE SEPO PT. BAKTI PERTIWI NUSANTARA PROVINSI MALUKU UTARA: Dosen Teknik Pertambangan Universitas Muhammadiyah Maluku Utara”, EJD, vol. 12, no. 2, pp. 76–82, Nov. 2019, Accessed: Oct. 17, 2025. [Online]. Available: https://jurnal.ummu.ac.id/index.php/dintek/article/view/327