Columbia subject headings:
Harvard subject headings:
Leskov, N. S. (Nikolaĭ Semenovich), 1831-1895
Leskov, N. S. (Nikolaĭ Semenovich), 1831-1895--Congresses.
Princeton subject headings:
Leskov, N. S. (Nikolaĭ Semenovich), 1831-1895--Congresses.