Columbia subject headings:
Great Britain--Commerce.
Ireland--Commerce.
Iron industry and trade--Great Britain.
Iron industry and trade--Ireland.
Harvard subject headings:
Great Britain--Commerce--Ireland--History--18th century.
Great Britain. Parliament. House of Commons--Resolutions.
Ireland--Commerce--Great Britain--History--18th century.
Ireland. Parliament. House of Commons--Resolutions.
Iron industry and trade--Law and legislation--Great Britain.
O'Brien, Lucius Henry, Sir, -1795. Letters concerning the trade and manufactures of Ireland.
Princeton subject headings: