643  
1967
Indian ink and watercolour on watercolour paper with  
644  
4 March 1982
Watercolour and paste paint on watercolour paper
645  
6 March 1982
Watercolour and paste paint on watercolour paper
646  
1969/1970
Photograph, mounted on chipboard, neon tube, 2 chain  
1561  
Rome, 13 October 1975
Limestone from Civitanova,  
1562  
1970
Etching on Rives wove paper with watermark
1563  
1971
Algraph on thin, brownish wove paper
1564  
1982
Drypoint on wove paper
1565  
1987
Woodcut (white-line cut with drypoint on plywood)
1566  
1991
3 Heliogravures on wove paper
1567  
1997
Etching on wove paper
1568  
2001
Heliogravure and aquatint on  
1569  
2007
Heliogravure in black and bistre on chine collé on wove