Columbia subject headings:
Percy, Walker, 1916-1990--Criticism and interpretation.
Percy, Walker, 1916-1990--Philosophy.
Philosophy in literature.
Harvard subject headings:
Percy, Walker, 1916---Criticism and interpretation.
Percy, Walker, 1916---Philosophy.
Philosophy in literature.
Princeton subject headings:
Percy, Walker, 1916-1990--Criticism and interpretation.
Percy, Walker, 1916-1990--Philosophy.
Philosophy in literature.