10.17028/rd.lboro.7049210.v1 Rod Shaw Rod Shaw Handpump and apron 7 Loughborough University 2018 WEDC Technical Computer graphics Black and white Apron slabs Handpumps International and Development Communication 2018-09-10 15:15:18 Figure https://repository.lboro.ac.uk/articles/figure/Handpump_and_apron_7/7049210 Handpump and apron