Subject
- Surveys[remove]13
- Archaeology3
- Babylon (extinct city)3
- Architectural drawings2
- Slave emancipation2
- Agriculture1
- Depositions1
- Diplomatic protests1
- Harbour and coastal engineering1
- Hydrology1
- Imperialism1
- Irrigation1
- Military intelligence1
- Reports1
- River surveys1
- Second World War (1939-1945)1
- Slave trade1
- Trade (practice)1