b. 1912 — d. 1986
Born 1912 — Died 1986
Untitled
Composition
Untitled, from 'Zürcher Konkrete'
Vier Variationen um ein Quadrat
Geometrische Komposition
, 1948
, 1949
, 1953
, 1957
, 1959
, 1965
, 1967
, 1968
, 1970
, 1971
, 1973
, 1974
, 1975
, 1980
