Columbia subject headings:
Contributions in ontology.
Karouzos, Nikos, 1926-1990--Knowledge and learning.
Ontology in literature.
Harvard subject headings:
Karouzos, Nikos, 1926-1990--Criticism and interpretation.
Princeton subject headings:
Karouzos, Nikos, 1926-1990--Knowledge--Ontology.
Ontology in literature.