Columbia subject headings:
Harvard subject headings:
Authors--Drug use.
Creative writing--Psychological aspects.
Drug addicts' writings--History and criticism.
English literature--19th century--History and criticism
Opium abuse in literature.
Romanticism.
Princeton subject headings:
Authors--Drug use.
Creative writing--Psychological aspects.
Drug addicts' writings--History and criticism.
English literature--19th century--History and criticism.
Opium abuse in literature.
Romanticism.