Sipahutar W.S.
Sumatera Institute of Technology
South Lampung, Lampung, Indonesia
![Sipahutar W.S. Sipahutar W.S.](/authors/no.jpg)
Sipahutar Wahyu Solafide --- Lecturer, Department of Materials Engineering, Sumatera Institute of Technology (Sumatera, South Lampung, Lampung, 35551 Indonesia).
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