- 131 pages
- 5 hours of reading
1994- 264 pages
- 10 hours of reading
1992Epochen und Daten
- 414 pages
- 15 hours of reading
1991- 173 pages
- 7 hours of reading
1991
1991- 88 pages
- 4 hours of reading
1982- 444 pages
- 16 hours of reading
1981
1981- 539 pages
- 19 hours of reading
1981- 368 pages
- 13 hours of reading
1979