Title: Unsere Werte
Subjects: Concrete art, Exhibitions, Constructivism (Art), Zero (Group of artists), Optical art, Kinetic art, Modern Art, Kunst, Sammlung, Hubertus Schoeller Stiftung, Papiermuseum Düren
Places: Europe
People: Hubertus Schoeller (1942-)
Time periods: 20th century, 21st century