Limit your search
Donor
- Laylin, John G. (John Gallup), 1902- 4
Topic
- Canals 4
- Dams 4
- Irrigation 2
- Water-supply 2
- Agriculture 1
- Building 1
- Politics and government 1
Region
- Afghanistan 4
- Iran 4
- United States 1
Language
- English 4
Format
- application/pdf 4