Subject
- Second World War (1939-1945)14
- Petroleum industry8
- Bilateral relations6
- Smuggling5
- Customs administration4
- Education3
- Etiquette3
- Insurrections3
- Propaganda3
- Slave trade3
- Subversive activities3
- Air raid precautions2
- Arms control2
- Arms traffic2
- Civil aviation2
- Communism2
- Concessions, Oil, Trucial Coast2
- Employees2
- Exports2
- Imports2