Columbia subject headings:
Crimea (Ukraine)--Annexation to Soviet Union--Sources.
Crimea (Ukraine)--History--Sources.
Russia--History--Catherine II, 1762-1796--Sources.
Harvard subject headings:
Crimea (Ukraine)--Annexation to Russia--Sources.
Crimea (Ukraine)--History--Sources.
Russia--History--Catherine II, 1762-1796--Sources.
Russia--History--Catherine II, 1762-1796.
Princeton subject headings: