Columbia subject headings:
Anna, Empress of Russia, 1693-1740.
Catherine I, Empress of Russia, 1684-1727.
Elizabeth, Empress of Russia, 1709-1762.
Russia--History--1689-1801.
Russia--History--Anna, 1730-1740.
Russia--History--Catherine I, 1725-1727.
Russia--History--Elizabeth, 1741-1762.
Harvard subject headings:
Anna, Empress of Russia, 1693-1740.
Catherine I, Empress of Russia, 1684-1727.
Elizabeth, Empress of Russia, 1709-1762
Russia--History--1689-1801.
Russia--History--Anna, 1730-1740.
Russia--History--Catherine I, 1725-1727.
Russia--History--Elizabeth, 1741-1762.
Princeton subject headings:
Anna, Empress of Russia, 1693-1740.
Catherine I, Empress of Russia, 1684-1727.
Elizabeth, Empress of Russia, 1709-1762.
Russia--History--1689-1801.
Russia--History--Anna, 1730-1740.
Russia--History--Catherine I, 1725-1727.
Russia--History--Elizabeth, 1741-1762.