Columbia subject headings:
Harvard subject headings:
Great Britain--History, Military--1603-1714.
Great Britain--History--Charles I, 1625-1649.
Great Britain--History--Civil War, 1642-1649.
Great Britain--History--Commonwealth and Protectorate, 1649-1660.
Ireland--History--17th century.
Scotland--History--17th century.
Princeton subject headings:
Great Britain--History--Charles I, 1625-1649.
Great Britain--History--Civil War, 1642-1649.
Great Britain--History--Commonwealth and Protectorate, 1649-1660.