McMahon, Glenda Shaw, Rod Pour-flush to sewer Pour-flush to sewer WEDC;Sanitation ladders;Technical;Diagram;Toilets;Sanitation;International and Development Communication 2019-04-30
    https://repository.lboro.ac.uk/articles/figure/Pour-flush_to_sewer/7982813
10.17028/rd.lboro.7982813.v1