Columbia subject headings:
Gosudarstvennyĭ literaturnyĭ muzeĭ (Russia)--Bibliography--Catalogs.
Leskov, N. S. (Nikolaĭ Semenovich), 1831-1895--Bibliography.
Leskov, N. S. (Nikolaĭ Semenovich), 1831-1895--Manuscripts.
Ostrovsky, Aleksandr Nikolaevich, 1823-1886--Bibliography.
Ostrovsky, Aleksandr Nikolaevich, 1823-1886--Manuscripts.
Harvard subject headings:
Leskov, N. S. (Nikolaĭ Semenovich), 1831-1895--Bibliography.
Ostrovsky, Aleksandr Nikolaevich, 1823-1886--Bibliography.
Princeton subject headings: