Subject
- Meteorological data[remove]38
- Agriculture32
- Trade (practice)32
- Concessions2
- Dates (fruit)2
- Diaries2
- Opium trade2
- Pearl industry and trade2
- Shipping2
- Slave trade2
- Armed forces1
- Cholera1
- Education1
- Evacuation1
- Fishing--Persian Gulf1
- Foreign relations1
- Gazetteers1
- Geographical data1
- Geographical exploration1
- Human geography1