Aspekte Konstruktiver Kunst, Sammlung McCrory Corporation, New York, Kunsthaus Zurich.
Zurich: Offset + Buchdruck AG, 1977. Paperback. Illustrated wraps with black lettering; 55 pp; richly illustrated. Text in German. More
Zurich: Offset + Buchdruck AG, 1977. Paperback. Illustrated wraps with black lettering; 55 pp; richly illustrated. Text in German. More