“THE PERFORMANCE AND EFFICIENCY RATING EVALUATION OF A HYDRAULIC RAM PUMP PROTOTYPE WITH HEIGHT VARIATIONS”. FROPIL (Forum Profesional Teknik Sipil) 7, no. 1 (October 6, 2019): 47–53. Accessed April 13, 2026. https://www.journal.ubb.ac.id/index.php/fropil/article/view/1403.