McMahon, Glenda Shaw, Rod Aeration of a septic tank Aeration of a septic tank WEDC;Technical;Diagram;Sewerage;International and Development Communication 2019-05-02
    https://repository.lboro.ac.uk/articles/figure/Aeration_of_a_septic_tank/8068367
10.17028/rd.lboro.8068367.v1