KARAKTERISASI ASAL-USUL DAN TINGKAT KEMATANGAN BIOMARKA MINYAK MENTAH TARAKAN-KALIMANTAN UTARA. SAINTEKBU [Internet]. 2017 May 21 [cited 2026 May 31];9(2):16-2. Available from: https://ejournal.unwaha.ac.id/index.php/saintek/article/view/111