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Arraffii, Mohammad Dzaky (2023) Analisis Kelayakan Investasi Mesin Grinder Kopi Untuk Meningkatkan Kapasitas Penggilingan Kopi pada CV. Oyitok Company. (Analysis of the Feasibility of Investment in a Coffee Grinder Machine to Increase the Coffee Grinding Capacity on CV. Oyitok Company). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.