Columbia subject headings:
Heym, Georg, 1887-1912--Criticism and interpretation.
Lichtenstein, Alfred, 1889-1914--Criticism and interpretation.
Poets, German--20th century.
Harvard subject headings:
Expressionism
Heym, Georg, 1887-1912--Criticism and interpretation.
Lichtenstein, Alfred, 1889-1915--Criticism and interpretation.
Princeton subject headings: