@article{McMahon2019, author = "Glenda McMahon and Ken Chatterton", title = "{A rope and washer pump used in a borehole}", year = "2019", month = "5", url = "https://repository.lboro.ac.uk/articles/figure/A_rope_and_washer_pump_used_in_a_borehole/8069063", doi = "10.17028/rd.lboro.8069063.v1" }