McMahon, Glenda Chatterton, Ken Raised block latrine Raised block latrine WEDC;Excreta Disposal in Emergencies;Technical;Diagram;Latrines;International and Development Communication 2019-05-08
    https://repository.lboro.ac.uk/articles/figure/Raised_block_latrine/7907414
10.17028/rd.lboro.7907414.v1