Limit your search
Topic
- Laylin, John G. (John Gallup), 1902- 16
- Water-supply 15
- Politics and government 11
- Amini, Ali 4
- Tipton, R. J. (Royce J.), 1893- 1
Region
- Afghanistan 16
- Iran 16
Water Basin
- Helmand Rōd >> Afghanistan 16
Decade
- 1950-1959 16