(1921)
woodcut
etching
(1977)
screenprint
etchings
(1965)
etching and aquatint
(1966)
photo-lithograph
(1934)
(1979)
(1982)
photo-etched linocut
(2000)
folded coloured paper
(1987)
(1975)
rubbers stamps
rubber stamps
(1932)
lithograph