Refine Your Search
Book List
2
-
Water treatment and sanitation : a handbook of simple methods for rural areas in developing countries / by H.T. Mann, D. Williamson.
- Intermediate Technology Development Group,
- 1973.
- London :
-
Guide to hand-operated and animal-drawn equipment : a guide to agricultural equipment suitable for use in the developing countries which can be hand or animal operated / Intermediate technology development group.
- Intermediate Technology Development Group,
- 1973.
- London :