Columbia subject headings:
Sussex (England)--Description and travel.
Sussex (England)--History.
Harvard subject headings:
Human geography--England--Sussex.
Sussex (England)--Description and travel.
Sussex (England)--Geography.
Sussex (England)--History.
Princeton subject headings:
Geology--England--Sussex.
Sussex (England)
Sussex (England)--Description and travel.
Sussex (England)--Economic conditions.