Columbia subject headings:
Artist couples--Germany--Catalogs.
Krebs, Joachim, 1952---Catalogues raisonnés.
Schäfer, Sabine, 1957---Catalogues raisonnés.
Sound installations (Art)--Germany--Catalogs.
Harvard subject headings:
Artist couples--Germany--Catalogs.
Krebs, Joachim, 1952---Catalogues raisonnés.
Schäfer, Sabine, 1957---Catalogues raisonnés.
Sound installations (Art)--Germany--Catalogs.
Princeton subject headings: