STUDI KELAYAKAN USAHA PENGGILINGAN BATU TENAGA MESIN PADA UD. PRO WIJAYA DESA JERUK PURUT GEMPOL PASURUAN. JKIE (Journal Knowledge Industrial Engineering), [S. l.], v. 3, n. 2, 2016. DOI: 10.35891/jkie.v3i2.874. Disponível em: https://jurnal.yudharta.ac.id/v2/index.php/jkie/article/view/874. Acesso em: 29 oct. 2026.