10.17028/rd.lboro.7048904.v1 Rod Shaw Rod Shaw Preventing erosion at the base of a concrete slab Loughborough University 2018 WEDC Contextual Line drawings Colour Handpumps Apron slabs International and Development Communication 2018-09-10 15:17:30 Figure https://repository.lboro.ac.uk/articles/figure/Preventing_erosion_at_the_base_of_a_concrete_slab/7048904 Preventing erosion at the base of a concrete slab