(1986)
paper pulp construction
deep-etching and aquatint
(1968)
string print and relief-etching
(1958)
flat biting over lithographic crayon
(1960-70)
photo-etching
(1953)
stencil
etching
(1917)
etching and drypoint
(1992)
woodcut
(1965)
(1990)
lithograph
(1995)
electrostatic prints
electrostatic print