Wijaya R, Firdaus, Taufikurahman. PENINGKATAN KUALITAS REAR DERAILLEUR HANGER PADA SEPEDA MULTI GEAR MELALUI PENAMBAHAN UNSUR MAGNESIUM. MACHINERY [Internet]. 2024Feb.29 [cited 2024May9];5(1):1-7. Available from: https://jurnal.polsri.ac.id/index.php/machinery/article/view/7161