Brawira, N. A., Nurdin, H., Lapisa, R. and Syahri, B. (2022) “Analysis of Hardness on the Tapping Knife of Rubber Plants Made of Medium Carbon Steel Resulting from Quenching Process with Different Cooling Mediums”, INVOTEK: Jurnal Inovasi Vokasional dan Teknologi, 22(2), pp. 91–96. doi: 10.24036/invotek.v22i2.1017.