Calcareous Nannofossils from Bojongsana River, Purbalingga Regency: Implication for Identifying the Age of Tapak Formation. Geocelebes [Internet]. 2 Oktober 2026 [dikutip 11 Oktober 2026];10(2):258–268. Tersedia pada: https://journal.unhas.ac.id/index.php/geocelebes/article/view/50394