இந்த Publication Issue உங்கள் மொழியில் இல்லை, இதில் பார்க்கவும்: English (en), Français (fr), Español (es), Português (pt),
அல்லது Google Translate பயன்படுத்த:  

Water shortages are a problem in arid and semi-arid lands and this book introduces sand dams as a way of maintaining water supplies in times of drought.

This uses material from "Practical Action" with kind permission.

This edition published in the United Kingdom in 2020 by MissionAssist.