10.17028/rd.lboro.7049258.v1 Rod Shaw Rod Shaw Handpump and apron 3 Loughborough University 2018 WEDC Technical Computer graphics Black and white Apron slabs Wells Handpumps International and Development Communication 2018-09-10 15:08:19 Figure https://repository.lboro.ac.uk/articles/figure/Handpump_and_apron_3/7049258 Handpump and apron