Hathairat Thongkorn และ Siriporn Jongpatiwut. (2018) Identification of crude oils and fuel oils after weathering using biomarkers, pyrogenic index and asphaltenes contents. Chulalongkorn University:ม.ป.ท.Hathairat Thongkorn และ Siriporn Jongpatiwut. 2018. Identification of crude oils and fuel oils after weathering using biomarkers, pyrogenic index and asphaltenes contents. ม.ป.ท.:Chulalongkorn University;Hathairat Thongkorn และ Siriporn Jongpatiwut. Identification of crude oils and fuel oils after weathering using biomarkers, pyrogenic index and asphaltenes contents. ม.ป.ท.:Chulalongkorn University, 2018. Print.