Энэ нь Publication Issue Таны хэл дээр байхгүй байгаа, Нь харах: English (en), Español (es), Português (pt), Français (fr),
Эсвэл Google Translate ашиглах:  

How to make a simple filter to give clean drinking water, using locally available materials such as clay pots, sand, stones and gravel.


Adapted from CLEAN WATER FOR ALL, produced by The Church Missionary Society (CMS), 2005. This edition was published in the United Kingdom in 2019 by MissionAssist.