- Series: Raumschiff der Kinder Series Record # 52797
- Raumschiff der Kinder
- 1 Das Raumschiff der Kinder (1977) [SF] by Hans Joachim Alpers and Ronald M. Hahn [only as by Hans J. Alpers and Ronald M. Hahn]
- 2 Planet der Raufbolde (1977) [SF] by Hans Joachim Alpers and Ronald M. Hahn [only as by Hans J. Alpers and Ronald M. Hahn]
- 3 Wrack aus der Unendlichkeit (1977) [SF] by Hans Joachim Alpers and Ronald M. Hahn [only as by Hans J. Alpers and Ronald M. Hahn]
- 4 Bei den Nomaden des Weltraums (1977) [SF] by Hans Joachim Alpers and Ronald M. Hahn [also as by Hans J. Alpers and Ronald M. Hahn]
- 5
Die rätselhafte Schwimminsel?Die raetselhafte Schwimminsel(1978) [SF] by Hans Joachim Alpers and Ronald M. Hahn [also as by Hans J. Alpers and Ronald M. Hahn]
- 6
Ring der dreißig Welten?Ring der dreissig Welten(1979) [SF] by Hans Joachim Alpers and Ronald M. Hahn [also as by Hans J. Alpers and Ronald M. Hahn]
-
Die Besatzung der EUKALYPTUS (1977) [SF]
by
Hans Joachim Alpers
and
Ronald M. Hahn
only appeared as:
- Variant: Die Besatzung der EUKALYPTUS (1977) [as by Hans J. Alpers and Ronald M. Hahn]
- Variant: Was man vorher wissen sollte (1979) [as by Hans J. Alpers and Ronald M. Hahn]
- Raumschiff außer Kontrolle (1985) [C] by Hans Joachim Alpers and Ronald M. Hahn [only as by Hans J. Alpers and Ronald M. Hahn]
- Weltraum-Vagabunden (1986) [C] by Hans Joachim Alpers and Ronald M. Hahn