lumbangaol, partahi, Sidabutar, R., Simanjuntak, S. and Sinaga, A. (2023) “Alasan Penggunaan Material Bekas Pada Bangunan”, SPROCKET JOURNAL OF MECHANICAL ENGINEERING, 4(2), pp. 101-113. doi: https://doi.org/10.36655/sprocket.v4i2.896.