Siregar, C A, Fakultas Teknik Universitas Muhammadiyah Sumatera Utara Jalan Kapten Muchtar Basri No.3 Medan 20238, Indonesia, Indonesia

• Vol 2, No 2: September 2019 - Articles
  Rekayasa Saluran Gas Buang Sepeda Motor Guna Mengurangi Pencemaran Udara
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