DR1995:0290:081:002:002
1981?
DR1995:0290:081:002:003
7 March 1981
DR1995:0278:014:002
1976
DR1995:0274:049:002:001
15-16 July 1980
DR1995:0293:065:001
15 February 1981
Unibad: notes and sketches
DR1995:0274:049:003
10 April 1980
Unibad: notes and sketches
DR1995:0274:049:004
10 April 1980
Unibad: notes and sketches
DR1995:0274:049:005
10 April 1980
Unibad: notes and sketches
DR1995:0274:049:006
10 April 1980
B-Air: presentation drawing
DR2004:1085:001
1982 or 1983?