Columbia subject headings:
Great Britain--Foreign economic relations--Ireland--Early works to 1800.
Ireland--Commerce--Early works to 1800.
Ireland--Foreign economic relations--Great Britain--Early works to 1800.
Tariff--Great Britain.
Harvard subject headings:
England--Foreign economic relations--Ireland--Early works to 1800.
Ireland--Commerce--Early works to 1800.
Ireland--Foreign economic relations--England--Early works to 1800.
Princeton subject headings: