Columbia subject headings:
Harvard subject headings:
Clouds in literature--Congresses.
French literature--19th century--History and criticism--Congresses
French poetry--19th century--History and criticism--Congresses.
Romanticism--France--Congresses.
Princeton subject headings:
Clouds in literature--Congresses.
Romanticism--France--History--19th century--Congresses.
Romanticism--Themes, motives--Congresses.