Columbia subject headings:
French literature--20th century--History and criticism.
Zola, Émile, 1840-1902--Criticism and interpretation.
Harvard subject headings:
French literature--20th century--History and criticism
Zola, Émile, 1840-1902--Criticism and interpretation.
Princeton subject headings:
Zola, Émile, 1840-1902. Rougon-Macquart.