📕 TB.1.03 - Area sampling.

     **[<https://app.box.com/s/0c3f6fplxg22mclz20jsgltk1q2j3cyy>](<https://app.box.com/s/0c3f6fplxg22mclz20jsgltk1q2j3cyy>)**

https://app.box.com/s/0c3f6fplxg22mclz20jsgltk1q2j3cyy

Source : MSF - Public health engineering in precarious situations.