PRAYITNO, Budi; SUSILO, Susilo. Geology Of Tanjung Medan ,Rokan IV Koto , Rokan Hulu District, Riau Province. Journal of Geoscience, Engineering, Environment, and Technology, [S.l.], v. 3, n. 2, p. 123-127, june 2018. ISSN 2541-5794. Available at: <http://journal.uir.ac.id/index.php/JGEET/article/view/1597>. Date accessed: 16 sep. 2019. doi: https://doi.org/10.24273/jgeet.2018.3.2.1597.