Subject
- Political affairs6
- Boundaries4
- Shipping4
- Boundary disputes3
- Civil aviation3
- Concessions3
- Diplomacy3
- Homicide3
- Oil3
- Petroleum industry3
- Social conflicts3
- Sovereignty3
- Telegraphs3
- Territorial disputes3
- Air services agreements2
- Architectural plans2
- Cemeteries2
- Concessions, Oil, Gwadar2
- Muscat Civil Air Agreement (1934)2
- Post offices2