Subject
- Politics and government109
- Water109
- Trentoniana Historic Map Collection108
- Political Parties106
- Sequence stratigraphy101
- Water quality101
- Universities & colleges99
- Property98
- Urban development94
- History93
- Housing91
- Sex ratio89
- Urban density89
- Census districts88
- Demographic surveys85
- Coasts78
- Parks78
- Airports77
- Structure75
- Land value taxation68