Limit your search
Donor
- Laylin, John G. (John Gallup), 1902- 10
Topic
- Water-supply 6
- Irrigation 4
- Politics and government 4
- Agriculture 2
- Canals 2
- Dams 2
- Desertification 1
- Qanats 1
Region
- Afghanistan 9
- Iran 9
- Russia 1
Water Basin
- Helmand Rōd >> Afghanistan 10
Decade
- 1940-1949 10