Handpumps toward sustainable technology ; research and development during the water supply and sanitation decade.
| Päätekijä: | |
|---|---|
| Aineistotyyppi: | Kirja |
| Kieli: | englanti |
| Julkaistu: |
Wash., D. C.
UNDP-World Bank Water and Sanitation Program
c1992
|
| Aiheet: |