Columbia subject headings:
Nechuĭ-Levyt︠s︡ʹkyĭ, I. S. (Ivan Semenovych), 1837-1918.
Harvard subject headings:
Nechuĭ-Levyt︠s︡ʹkyĭ, I. S. (Ivan Semenovych), 1837-1918
Princeton subject headings:
Nechuĭ-Levyt︠s︡ʹkyĭ, I. S. (Ivan S.), 1837-1918.