10.17028/rd.lboro.7687907.v1 Glenda McMahon Glenda McMahon Ken Chatterton Ken Chatterton Gravity overflow spring a and b Loughborough University 2019 WEDC Water for low-income communities Springs Artesan Gravity International and Development Communication 2019-02-18 19:12:18 Figure https://repository.lboro.ac.uk/articles/figure/Gravity_overflow_spring_a_and_b/7687907 Gravity overflow spring a and b