1
Published: 1984
2
Published: 1988
3
Published: 1974
4
Published: 1983
5
Published: 1981
6
Published: [1983]
7
Published: 1982
8
Published: 1975
Superior document: Daten, Dienste, Dokumente 1
9
Published: 1979
10
Published: 1975
11
Published: 1971-1991
12
Published: 1982
13
Published: 1980
14
Published: 1987
15
Published: [1983]
16
Published: 1971
17
Published: 1988
18
Published: 1984
19
Published: 1977
20
Published: 1991