📕 Source : ACF© - 11-Gravity distribution systems. // 2005 // 57 pages.

https://www.actioncontrelafaim.org/en/publication/water-sanitation-and-hygiene-for-populations-at-risk/

**https://app.box.com/s/b939gvzo3szq61x1or9flmns7gbapu4k**

https://app.box.com/s/b939gvzo3szq61x1or9flmns7gbapu4k

Source : ACF© // Release year — 2005.