Columbia subject headings:
Drug addiction--France.
Drugs in literature.
French literature--19th century--History and criticism.
French literature--19th century.
French literature--20th century--History and criticism.
French literature--20th century.
Opium abuse.
Harvard subject headings:
French literature--19th century
French literature--19th century--History and criticism
French literature--20th century
French literature--20th century--History and criticism
Narcotics--Literary collections.
Opium abuse in literature.
Opium--Literary collections.
drugs in literature.
Princeton subject headings:
Drug addiction--France.
Drugs in literature.
French literature--19th century--History and criticism.
French literature--19th century.
French literature--20th century--History and criticism.
French literature--20th century.
Opium abuse.