Subyakto, A. ., Hamzah, A. . and Surono, A. . (2025) “21 Bar Yoshimin Boiler Maintenance with Controlling Residual Phosphate”, IPTEK The Journal of Engineering, 6(2), pp. 47–51. Available at: https://journal.its.ac.id/index.php/joe/article/view/8064 (Accessed: 27 January 2026).