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“THE EFFECT OF NICKEL ELECTROPLATING ON THE SURFACE HARDNESS OF LOW CARBON STEEL”, empd, vol. 1, no. 2, hlm. 46–52, Nov 2022, Diakses: 8 Oktober 2025. [Daring]. Tersedia pada: https://journal.unram.ac.id/index.php/empd/article/view/1495