Perry Rhodan Leserkontaktseite (Perry Rhodan #23)
From Author Wars - https://authorwars.com/books/perry-rhodan-leserkontaktseite-perry-rhodan-23-2458884.html
Overview:
Editions/Publications:
- 1978 . Perry Rhodan, #23: Geheimschaltung X (1978, W. Voltz, Pabel-Moewig, DM 1.50, 68 pages, digest, MAGAZINE)