Helmizar, H. 2019. FLOW CHARACTERISTIC OF HEAD DIFFERENCE PUMP AS ARRANGED IN SERIES AND PARALLEL. Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin. 3, 1 (Apr. 2019), 31–36. DOI:https://doi.org/10.33369/rekayasamekanika.v3i1.9933.