Subject
- Export controls6
- Exports6
- Geography--Early works to 18006
- Hangings (executions)6
- Intelligence6
- Irrigation6
- Leases (documents)6
- Marine navigation6
- Maritime transport6
- Mathematics -- Early works to 18006
- Medical personnel6
- Military expenditure6
- Military logistics6
- Oil6
- Palaces6
- Payment6
- Pearl industry and trade6
- Pensions6
- Political reform6
- Postal services6