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Donor
- Laylin, John G. (John Gallup), 1902- 7
Topic
- Canals 7
- Dams 6
- Irrigation 4
- Agriculture 2
- Water-supply 2
- Building 1
- Politics and government 1
Region
- Afghanistan 7
- Iran 6
- United States 1
Water Basin
- Helmand Rōd >> Afghanistan 7