Columbia subject headings:
Agriculture--England--Essex--History.
Land tenure--England--Essex--History.
Social classes--England--Essex--History.
Harvard subject headings:
Agriculture--England--Essex--History.
Land tenure--England--Essex--History.
Social classes--England--Essex--History.
Princeton subject headings:
Agriculture--England--Essex--History.
Land tenure--England--Essex--History.
Social classes--England--Essex--History.