Columbia subject headings:
Mickiewicz, Adam, 1798-1855--Friends and associates.
Mickiewicz, Adam, 1798-1855--Travel--Russia.
Poets, Polish--19th century--Biography.
Polish people--Foreign countries--History--19th century.
Russians--Foreign countries--History--19th century.
Harvard subject headings:
Poets, Polish--19th century--Biography.
Polish people--Foreign countries--History--19th century.
Russians--Foreign countries--History--19th century.
Princeton subject headings:
Poets, Polish--19th century--Biography.
Polish people--Foreign countries--History--19th century.
Russians--Foreign countries--History--19th century.