Zulham Effendi, Zakwan, and Amar Fauzi Nainggolan. “ANALISA KEHILANGAN ENERGI PADA BOILER PABRIK KELAPA SAWIT ENERGY LOSS ANALYSIS ON THE PALM OIL MILL BOILER”. Jurnal Agro Fabrica, vol. 2, no. 1, June 2020, pp. 30-37, doi:10.47199/jaf.v2i1.132.