McMahon, Glenda Chatterton, Ken Mechanically-operated piston pump Mechanically-operated piston pump WEDC;Water for low-income communities;Technical;Pumps;International and Development Communication 2019-02-20
    https://repository.lboro.ac.uk/articles/figure/Mechanically-operated_piston_pump/7712870
10.17028/rd.lboro.7712870.v1