McMahon, Glenda Chatterton, Ken Types of reciprocating handpumps Types of reciprocating handpumps WEDC;Pumps;Technical;Diagram;Wells;International and Development Communication 2019-05-02
    https://repository.lboro.ac.uk/articles/figure/Types_of_reciprocating_handpumps/7959224
10.17028/rd.lboro.7959224.v1