Subject
- Gravity anomalies1
- Great Britain1
- Industrial minerals1
- Industries1
- Iron industry and trade1
- Iron mines and mining1
- Italian colonies1
- Italo-Ethiopian War, 1935-19361
- Language and languages1
- Languages1
- Limestone1
- Livestock1
- Magnetic anomalies1
- Marine sediments1
- Metallogeny1
- Mines and mineral resources1
- Monasteries1
- Mountains1
- Natural resources1
- Nautical charts1
