Columbia subject headings:
Harvard subject headings:
Historians--Soviet Union--Biography
Historians--Ukraine--Biography
Kostomarov, N. I. (Nikolaĭ Ivanovich), 1817-1885
Princeton subject headings:
Kostomarov, N. I. (Nikolaĭ Ivanovich), 1817-1885.
Russia--Historiography.
Ukraine--Historiography.