Subject
- Medicine--Early works to 1800116
- Astronomy--Early works to 1800103
- Second World War (1939-1945)53
- Treaties53
- Slave trade51
- Philosophy -- Early works to 180046
- Astrology--Early works to 180043
- Concessions, Oil, Bahrain39
- Concessions35
- Mathematics -- Early works to 180035
- Bilateral relations32
- Geometry--Early works to 180032
- Slave emancipation32
- Smuggling31
- Boundaries30
- Petroleum industry29
- Exports28
- Pearl industry and trade28
- Medicine, Arab27
- Medicine, Medieval26