Columbia subject headings:
Levinson-Lessing, F. I︠U︡. (Frant︠s︡ I︠U︡lʹevich), 1861-1939.
Harvard subject headings:
Levinson-Lessing, F. I︠U︡. (Frant︠s︡ I︠U︡lʹevich), 1861-1939
Princeton subject headings: