📕 TB.3.11 - Septic tank.

   **[<https://app.box.com/s/y3vmfirtqb5hp4sfac9r1nfcn3yolw99>](<https://app.box.com/s/j412zvefez9sy0ldn54stgm0keuns1he>)**

https://app.box.com/s/j412zvefez9sy0ldn54stgm0keuns1he

Source : MSF - Public health engineering in precarious situations.