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Donor
- Laylin, John G. (John Gallup), 1902- 3
Topic
- Water-supply 3
- Dams 2
- Irrigation 2
- Politics and government 2
- Canals 1
- Treaties 1
Region
- United States 3
- Afghanistan 2
- Iran 2
- Mexico >> North America 1
Collection
- The Middle East Water Collection 3