Columbia subject headings:
Harvard subject headings:
I͡Urkevich, P. D. (Pamfil Danilovich), 1826-1874.
I︠U︡rkevich, P. D. (Pamfil Danilovich), 1826-1874.
Philosophy, Ukrainian.
Princeton subject headings:
I︠U︡rkevich, P. D. (Pamfil Danilovich), 1826-1874.