Hariningsih, H., Sumpena, S., & Sukarjo, H. (2020). The effectivity of used-oil as quenching medium of 42-CrMo4 steel for automotive materials. Universitas Muhammadiyah Surakarta.
Chicago-viite (17. p.)Hariningsih, Hariningsih, Sumpena Sumpena, ja Heribertus Sukarjo. The Effectivity of Used-oil as Quenching Medium of 42-CrMo4 Steel for Automotive Materials. Universitas Muhammadiyah Surakarta, 2020.
MLA-viite (9. p.)Hariningsih, Hariningsih, et al. The Effectivity of Used-oil as Quenching Medium of 42-CrMo4 Steel for Automotive Materials. Universitas Muhammadiyah Surakarta, 2020.
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