Columbia subject headings:
Emscher River (North Rhine-Westphalia, Germany)--Poetry.
Installations (Art)--Germany--Poetry.
Observatorium (Group of artists). Warten auf den Fluss--Poetry.
Harvard subject headings:
Emscher River (North Rhine-Westphalia, Germany)--Poetry.
Installations (Art)--Germany--Poetry.
Observatorium (Group of artists). Warten auf den Fluss--Poetry.
Princeton subject headings:
Emscher River (North Rhine-Westphalia, Germany)--Poetry.
Installations (Art)--Germany--Poetry.
Observatorium (Group of artists). Warten auf den Fluss--Poetry.
Poetry.