Widiono AR, Suhartono S. Kewenangan Pengelolaan Pertambangan Mineral dan Batubara Ditinjau dari Pasal 18a Ayat (2) Undang-Undang Dasar 1945 . Innovative [Internet]. 2023 Oct. 7 [cited 2026 Jun. 9];3(5):719-32. Available from: https://j-innovative.org/index.php/Innovative/article/view/4916