Tampoma MA, Sunardi S. Registering Underground Rights: Evaluating Deed Standards and Evidence Post-GR 18/2021. almanhaj [Internet]. 2026 Aug. 4 [cited 2026 Aug. 11];8(2):113-32. Available from: https://ejournal.insuriponorogo.ac.id/index.php/almanhaj/article/view/9548