Columbia subject headings:
Harvard subject headings:
Crimea (Ukraine)--Foreign relations--Russia.
Crimea (Ukraine)--History--18th century.
Russia--Foreign relations--Ukraine.
Russia--History--1689-1801.
Princeton subject headings:
Crimea (Ukraine)--Annexation to Russia.
Crimea (Ukraine)--Ethnic relations.
Crimea (Ukraine)--History--19th century.
Russians--Ukraine--Crimea--History.