Prautomo, Angga Agus, and Atmiasri Atmiasri. “THE MANUFACTURE OF THE PROTOTYPE FIXED CRANE HARBOR AS THE ADDER DEVICE INSIGHT FOR CRANE OPERATOR NOVICE”. Best : Journal of Applied Electrical, Science and Technology, vol. 1, no. 1, Sept. 2019, pp. 23-27, https://doi.org/10.36456/best.vol1.no1.2001.