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Kurniawan, Dicky, Safril Safril, and Bukhari Bukhari. 2019. “RANCANG BANGUN MESIN PUNTIR UNTUK PEMBUAT BESI TERALIS MODEL SPIRAL SPESIFIKASI BESI KOTAK 10X10X1000 Mm”. Jurnal Teknik Mesin 11 (1), 16-21. http://ejournal2.pnp.ac.id/index.php/jtm/article/view/174.