Fadli, M.V. and A’rasy Fahruddin 2021. The Effect of Mini Boiler Fire Pipe Diameter Variations on Steam Power and Efficiency: Pengaruh Variasi Diameter Pipa Api Mini Boiler Terhadap Daya Uap Dan Efisiensi. Procedia of Engineering and Life Science. 1, 1 (Mar. 2021). DOI:https://doi.org/10.21070/pels.v1i1.831.