Young, B. (1990). Design of ram pump systems for village water supply: Notes for a short course. University of Technology.
Chicago-referens (17:e uppl.)Young, Brian. Design of Ram Pump Systems for Village Water Supply: Notes for a Short Course. PNG, Lae: University of Technology, 1990.
MLA-referens (9:e uppl.)Young, Brian. Design of Ram Pump Systems for Village Water Supply: Notes for a Short Course. University of Technology, 1990.
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