PULUNGAN, Muhammad Anhar; TANJUNG, Sera Delta. A Analysis of Student Mastery Levels on Composite Material Subjects in South Aceh Polytechnic Mechanical Engineering Study Program. Jurnal Inotera, [S.l.], v. 4, n. 2, p. 56-63, oct. 2019. ISSN 2581-1274. Available at: <http://inotera.poltas.ac.id/index.php/inotera/article/view/77>. Date accessed: 13 nov. 2019. doi: https://doi.org/10.31572/inotera.Vol4.Iss2.2019.ID77.