McMahon, Glenda Chatterton, Ken The Volanta handpump sub-surface details The Volanta handpump sub-surface details WEDC;Pumps;Technical;Diagram;Wells;International and Development Communication 2019-05-02
    https://repository.lboro.ac.uk/articles/figure/The_Volanta_handpump_sub-surface_details/7959239
10.17028/rd.lboro.7959239.v1