Columbia subject headings:
Onyshchenko, O. S. (Oleksiĭ Semenovych)--Bibliography.
Harvard subject headings:
Onyshchenko, O. S. (Oleksiĭ Semenovych)
Onyshchenko, O. S. (Oleksiĭ Semenovych)--Bibliography.
Philosophers--Ukraine--Biography
Scholars--Ukraine--Biography
Princeton subject headings: