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Ardana, Viky (2025) Pengaruh Kosentrasi Inhibitor Ekstrak Daun Waru Dan Waktu Perendaman Menggunakan Material Baja S45C Terhadap Uji Mekanik. (Influence Of Hibiscus Leaf Extract Inhibitor Concentration and Immersion Duration on the Mechanical Performance of S45C Steel). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.