Columbia subject headings:
Gradovskiĭ, A. D. (Aleksandr Dmitrievich), 1841-1889.
Leontovich, Ḟ. I. (Ḟedor Ivanovich), 1833-1911.
Russia--Historiography.
Sergeevich, V. (Vasiliĭ), 1832-1910.
Harvard subject headings:
Russia--Historiography
Princeton subject headings:
Russia--Historiography.
Sergeevich, V. (Vasiliĭ), 1832-1910.