Awoke, Sisay, and Dessalegn Gezahegn. “Characterization of Petroleum Oil Seepage Using Modern Spectroscopic Techniques: In Case of Were Ilu-Legeheda, Ethiopia”. Abyssinia Journal of Engineering and Computing 1, no. 1 (January 1, 2021): 26–30. Accessed July 29, 2021. https://journals.wu.edu.et/index.php/ajec/article/view/161.