Columbia subject headings:
Bigongiari, Piero--Criticism and interpretation.
Ermetismo (Italian literature)
Italian poetry--20th century--History and criticism.
Harvard subject headings:
Bigongiari, Piero--Criticism and interpretation.
Ermetismo (Italian literature)
Italian poetry--20th century--History and criticism
Princeton subject headings:
Bigongiari, Piero--Criticism and interpretration.
Hermetism in literature.