Subject
- Petroleum industry[remove]115
- Second World War (1939-1945)42
- Concessions20
- Oil15
- Petroleum refineries13
- Petroleum products9
- Persian Gulf States (emergency) Order in Council (1939)8
- Employees7
- Exports7
- Military recruitment7
- Notarial instruments7
- Air raid precautions6
- National economy6
- Recruitment6
- Oilfields5
- Security of property5
- Colonial administration4
- Equipment4
- National service4
- Subversive activities4