Columbia subject headings:
Great Britain--History, Naval--19th century.
Liberalism--Great Britain--History--19th century.
Naval strategy--History--19th century.
Harvard subject headings:
Great Britain--History, Naval--19th century
Liberalism--Great Britain--History--19th century
Naval strategy--History--19th century.
Princeton subject headings:
Great Britain--History, Naval--19th century.
Liberalism--Great Britain--History--19th century.
Naval strategy--History--19th century.