- Series: Sonderbeitrag Series Record # 53453
- Sonderbeitrag
- Liebe Perry-Rhodan-Freunde (Perry Rhodan #313) (1983) [ES] by uncredited
- Rhodan im Regal (Perry Rhodan #313) (1983) [ES] by Michael Nagula [only as by Walter Henning]
- Galaxien oder: Von der Milchstrasse bis ans Ende des Universums (1983) [ES] by Olaf Koch
- Atombomben, Frauen und Mutterleib: Die Idee in der Science Fiction (1983) [ES] by Michael Nagula [only as by Michael Landmann]
-
Hintertür ins Paradies??Hintertuer ins Paradies?(1984) [ES] by Michael Adrian
- Astronomie-Splitter (1984) [ES] by Michael Nagula
-
Die Kräfte des Mondes?Die Kraefte des Mondes(1984) [ES] by Michael Nagula [only as byManfred Schröder?Manfred Schroeder]
-
Kommunikation morgen (1984) [ES]
by
Michael Nagula
[only as by Manfred Schröder?Manfred Schroeder]
- Sind Gefühle physikalisch? (1984) [ES] by Andreas Magner
- Bulgarische Science Fiction! Gibt's denn das? (1984) [ES] by Michael Nagula [only as by Michael Landmann]
- Wachsendes Wissen und schwindende Einsicht (1984) [ES] by Michael Nagula
- Der Mensch aus der Retorte (1987) [ES] by uncredited