Columbia subject headings:
German literature--20th century.
Harvard subject headings:
German literature--20th century
Petzow (Werder, Potsdam, Germany)--History--20th century.
Princeton subject headings:
Authors, German--Homes and haunts.
German literature--Germany (East)--History and criticism.
Petzow (Werder, Potsdam, Germany)--History--20th century.
Poetry.
Writers' retreats--Germany--Petzow--History.
Writers' retreats--Germany--Petzow--Poetry.